Home / 15,406,990.20-21,261,385.04-8,531,324.64

Finding the Fourth Proportional to 15,406,990.20, 21,261,385.04 and 8,531,324.64

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Solution

The fourth proportional to 15,406,990.20, 21,261,385.04 and 8,531,324.64 is: 11,773,083.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,406,990.20 : 21,261,385.04 = 8,531,324.64 : x
  2. Step 2: Convert to fraction form
    15,406,990.20/21,261,385.04 = 8,531,324.64/x
  3. Step 3: Cross multiply
    15,406,990.20x = 21,261,385.04 × 8,531,324.64
  4. Step 4: Simplify right side
    15,406,990.20x = 181,387,778,029,622.78
  5. Step 5: Solve for x
    x = 181,387,778,029,622.78/15,406,990.20
  6. Step 6: Final answer
    x = 11,773,083.24

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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.