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Finding the Fourth Proportional to 15,202,407.16, 20,979,594.48 and 8,326,446.36

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Solution

The fourth proportional to 15,202,407.16, 20,979,594.48 and 8,326,446.36 is: 11,490,645.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,202,407.16 : 20,979,594.48 = 8,326,446.36 : x
  2. Step 2: Convert to fraction form
    15,202,407.16/20,979,594.48 = 8,326,446.36/x
  3. Step 3: Cross multiply
    15,202,407.16x = 20,979,594.48 × 8,326,446.36
  4. Step 4: Simplify right side
    15,202,407.16x = 174,685,468,092,272.09
  5. Step 5: Solve for x
    x = 174,685,468,092,272.09/15,202,407.16
  6. Step 6: Final answer
    x = 11,490,645.28

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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.