Home / 15,476.39-21,357.20-8,761.85

Finding the Fourth Proportional to 15,476.39, 21,357.20 and 8,761.85

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Solution

The fourth proportional to 15,476.39, 21,357.20 and 8,761.85 is: 12,091.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,476.39 : 21,357.20 = 8,761.85 : x
  2. Step 2: Convert to fraction form
    15,476.39/21,357.20 = 8,761.85/x
  3. Step 3: Cross multiply
    15,476.39x = 21,357.20 × 8,761.85
  4. Step 4: Simplify right side
    15,476.39x = 187,128,497.94
  5. Step 5: Solve for x
    x = 187,128,497.94/15,476.39
  6. Step 6: Final answer
    x = 12,091.22

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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.