Home / 28,403,327.20-42,604,990.80-13,258,789.60

Finding the Fourth Proportional to 28,403,327.20, 42,604,990.80 and 13,258,789.60

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Solution

The fourth proportional to 28,403,327.20, 42,604,990.80 and 13,258,789.60 is: 19,888,184.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,403,327.20 : 42,604,990.80 = 13,258,789.60 : x
  2. Step 2: Convert to fraction form
    28,403,327.20/42,604,990.80 = 13,258,789.60/x
  3. Step 3: Cross multiply
    28,403,327.20x = 42,604,990.80 × 13,258,789.60
  4. Step 4: Simplify right side
    28,403,327.20x = 564,890,608,927,135.62
  5. Step 5: Solve for x
    x = 564,890,608,927,135.62/28,403,327.20
  6. Step 6: Final answer
    x = 19,888,184.40

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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.