Home / 21,488.18-32,239.11-13,639.59

Finding the Fourth Proportional to 21,488.18, 32,239.11 and 13,639.59

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Solution

The fourth proportional to 21,488.18, 32,239.11 and 13,639.59 is: 20,463.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,488.18 : 32,239.11 = 13,639.59 : x
  2. Step 2: Convert to fraction form
    21,488.18/32,239.11 = 13,639.59/x
  3. Step 3: Cross multiply
    21,488.18x = 32,239.11 × 13,639.59
  4. Step 4: Simplify right side
    21,488.18x = 439,728,242.36
  5. Step 5: Solve for x
    x = 439,728,242.36/21,488.18
  6. Step 6: Final answer
    x = 20,463.73

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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.