Home / 15,279,172.80-21,078,190.08-9,156,972.48

Finding the Fourth Proportional to 15,279,172.80, 21,078,190.08 and 9,156,972.48

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Solution

The fourth proportional to 15,279,172.80, 21,078,190.08 and 9,156,972.48 is: 12,632,385.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,279,172.80 : 21,078,190.08 = 9,156,972.48 : x
  2. Step 2: Convert to fraction form
    15,279,172.80/21,078,190.08 = 9,156,972.48/x
  3. Step 3: Cross multiply
    15,279,172.80x = 21,078,190.08 × 9,156,972.48
  4. Step 4: Simplify right side
    15,279,172.80x = 193,012,406,490,769
  5. Step 5: Solve for x
    x = 193,012,406,490,769/15,279,172.80
  6. Step 6: Final answer
    x = 12,632,385.86

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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.