Home / 21,853.14-32,772.15-13,520.40

Finding the Fourth Proportional to 21,853.14, 32,772.15 and 13,520.40

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Solution

The fourth proportional to 21,853.14, 32,772.15 and 13,520.40 is: 20,275.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,853.14 : 32,772.15 = 13,520.40 : x
  2. Step 2: Convert to fraction form
    21,853.14/32,772.15 = 13,520.40/x
  3. Step 3: Cross multiply
    21,853.14x = 32,772.15 × 13,520.40
  4. Step 4: Simplify right side
    21,853.14x = 443,092,576.86
  5. Step 5: Solve for x
    x = 443,092,576.86/21,853.14
  6. Step 6: Final answer
    x = 20,275.92

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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.