Home / 43,221.13-64,831.70-13,641.28

Finding the Fourth Proportional to 43,221.13, 64,831.70 and 13,641.28

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Solution

The fourth proportional to 43,221.13, 64,831.70 and 13,641.28 is: 20,461.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,221.13 : 64,831.70 = 13,641.28 : x
  2. Step 2: Convert to fraction form
    43,221.13/64,831.70 = 13,641.28/x
  3. Step 3: Cross multiply
    43,221.13x = 64,831.70 × 13,641.28
  4. Step 4: Simplify right side
    43,221.13x = 884,387,244.60
  5. Step 5: Solve for x
    x = 884,387,244.60/43,221.13
  6. Step 6: Final answer
    x = 20,461.92

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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.