Home / 21,289,728.70-31,934,593.05-9,165,000.70

Finding the Fourth Proportional to 21,289,728.70, 31,934,593.05 and 9,165,000.70

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Solution

The fourth proportional to 21,289,728.70, 31,934,593.05 and 9,165,000.70 is: 13,747,501.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,289,728.70 : 31,934,593.05 = 9,165,000.70 : x
  2. Step 2: Convert to fraction form
    21,289,728.70/31,934,593.05 = 9,165,000.70/x
  3. Step 3: Cross multiply
    21,289,728.70x = 31,934,593.05 × 9,165,000.70
  4. Step 4: Simplify right side
    21,289,728.70x = 292,680,567,657,465.12
  5. Step 5: Solve for x
    x = 292,680,567,657,465.12/21,289,728.70
  6. Step 6: Final answer
    x = 13,747,501.05

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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.