Home / 21,337.76-29,440.50-12,837.08

Finding the Fourth Proportional to 21,337.76, 29,440.50 and 12,837.08

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Solution

The fourth proportional to 21,337.76, 29,440.50 and 12,837.08 is: 17,711.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,337.76 : 29,440.50 = 12,837.08 : x
  2. Step 2: Convert to fraction form
    21,337.76/29,440.50 = 12,837.08/x
  3. Step 3: Cross multiply
    21,337.76x = 29,440.50 × 12,837.08
  4. Step 4: Simplify right side
    21,337.76x = 377,930,053.74
  5. Step 5: Solve for x
    x = 377,930,053.74/21,337.76
  6. Step 6: Final answer
    x = 17,711.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.