Home / 21,135,229.60-31,681,849.20-9,755,831.20

Finding the Fourth Proportional to 21,135,229.60, 31,681,849.20 and 9,755,831.20

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Solution

The fourth proportional to 21,135,229.60, 31,681,849.20 and 9,755,831.20 is: 14,624,055.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,135,229.60 : 31,681,849.20 = 9,755,831.20 : x
  2. Step 2: Convert to fraction form
    21,135,229.60/31,681,849.20 = 9,755,831.20/x
  3. Step 3: Cross multiply
    21,135,229.60x = 31,681,849.20 × 9,755,831.20
  4. Step 4: Simplify right side
    21,135,229.60x = 309,082,772,899,055
  5. Step 5: Solve for x
    x = 309,082,772,899,055/21,135,229.60
  6. Step 6: Final answer
    x = 14,624,055.61

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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.