Home / 21,378.60-32,003.10-16,151.40

Finding the Fourth Proportional to 21,378.60, 32,003.10 and 16,151.40

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Solution

The fourth proportional to 21,378.60, 32,003.10 and 16,151.40 is: 24,178.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,378.60 : 32,003.10 = 16,151.40 : x
  2. Step 2: Convert to fraction form
    21,378.60/32,003.10 = 16,151.40/x
  3. Step 3: Cross multiply
    21,378.60x = 32,003.10 × 16,151.40
  4. Step 4: Simplify right side
    21,378.60x = 516,894,869.34
  5. Step 5: Solve for x
    x = 516,894,869.34/21,378.60
  6. Step 6: Final answer
    x = 24,178.14

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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.