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Finding the Fourth Proportional to 43,901.66, 65,867.27 and 13,920.79

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Solution

The fourth proportional to 43,901.66, 65,867.27 and 13,920.79 is: 20,885.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,901.66 : 65,867.27 = 13,920.79 : x
  2. Step 2: Convert to fraction form
    43,901.66/65,867.27 = 13,920.79/x
  3. Step 3: Cross multiply
    43,901.66x = 65,867.27 × 13,920.79
  4. Step 4: Simplify right side
    43,901.66x = 916,924,433.54
  5. Step 5: Solve for x
    x = 916,924,433.54/43,901.66
  6. Step 6: Final answer
    x = 20,885.87

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1.5x scale

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.