Home / 15,778.29-21,773.39-8,704.71

Finding the Fourth Proportional to 15,778.29, 21,773.39 and 8,704.71

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Solution

The fourth proportional to 15,778.29, 21,773.39 and 8,704.71 is: 12,012.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,778.29 : 21,773.39 = 8,704.71 : x
  2. Step 2: Convert to fraction form
    15,778.29/21,773.39 = 8,704.71/x
  3. Step 3: Cross multiply
    15,778.29x = 21,773.39 × 8,704.71
  4. Step 4: Simplify right side
    15,778.29x = 189,531,045.67
  5. Step 5: Solve for x
    x = 189,531,045.67/15,778.29
  6. Step 6: Final answer
    x = 12,012.14

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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.