Home / 21,572.47-32,377.11-8,434.09

Finding the Fourth Proportional to 21,572.47, 32,377.11 and 8,434.09

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Solution

The fourth proportional to 21,572.47, 32,377.11 and 8,434.09 is: 12,658.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,572.47 : 32,377.11 = 8,434.09 : x
  2. Step 2: Convert to fraction form
    21,572.47/32,377.11 = 8,434.09/x
  3. Step 3: Cross multiply
    21,572.47x = 32,377.11 × 8,434.09
  4. Step 4: Simplify right side
    21,572.47x = 273,071,459.68
  5. Step 5: Solve for x
    x = 273,071,459.68/21,572.47
  6. Step 6: Final answer
    x = 12,658.33

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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.