Home / 12,268,901.80-18,403,352.70-8,442,526.60

Finding the Fourth Proportional to 12,268,901.80, 18,403,352.70 and 8,442,526.60

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Solution

The fourth proportional to 12,268,901.80, 18,403,352.70 and 8,442,526.60 is: 12,663,789.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,268,901.80 : 18,403,352.70 = 8,442,526.60 : x
  2. Step 2: Convert to fraction form
    12,268,901.80/18,403,352.70 = 8,442,526.60/x
  3. Step 3: Cross multiply
    12,268,901.80x = 18,403,352.70 × 8,442,526.60
  4. Step 4: Simplify right side
    12,268,901.80x = 155,370,794,698,931.81
  5. Step 5: Solve for x
    x = 155,370,794,698,931.81/12,268,901.80
  6. Step 6: Final answer
    x = 12,663,789.90

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.