Home / 12,022.80-18,034.20-7,875.60

Finding the Fourth Proportional to 12,022.80, 18,034.20 and 7,875.60

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Solution

The fourth proportional to 12,022.80, 18,034.20 and 7,875.60 is: 11,813.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,022.80 : 18,034.20 = 7,875.60 : x
  2. Step 2: Convert to fraction form
    12,022.80/18,034.20 = 7,875.60/x
  3. Step 3: Cross multiply
    12,022.80x = 18,034.20 × 7,875.60
  4. Step 4: Simplify right side
    12,022.80x = 142,030,145.52
  5. Step 5: Solve for x
    x = 142,030,145.52/12,022.80
  6. Step 6: Final answer
    x = 11,813.40

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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.