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Finding the Fourth Proportional to 15,202,406.16, 20,979,593.10 and 8,326,445.36

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Solution

The fourth proportional to 15,202,406.16, 20,979,593.10 and 8,326,445.36 is: 11,490,643.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,202,406.16 : 20,979,593.10 = 8,326,445.36 : x
  2. Step 2: Convert to fraction form
    15,202,406.16/20,979,593.10 = 8,326,445.36/x
  3. Step 3: Cross multiply
    15,202,406.16x = 20,979,593.10 × 8,326,445.36
  4. Step 4: Simplify right side
    15,202,406.16x = 174,685,435,517,285.06
  5. Step 5: Solve for x
    x = 174,685,435,517,285.06/15,202,406.16
  6. Step 6: Final answer
    x = 11,490,643.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.