Home / 15,500.61-21,392.51-8,785.52

Finding the Fourth Proportional to 15,500.61, 21,392.51 and 8,785.52

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Solution

The fourth proportional to 15,500.61, 21,392.51 and 8,785.52 is: 12,124.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,500.61 : 21,392.51 = 8,785.52 : x
  2. Step 2: Convert to fraction form
    15,500.61/21,392.51 = 8,785.52/x
  3. Step 3: Cross multiply
    15,500.61x = 21,392.51 × 8,785.52
  4. Step 4: Simplify right side
    15,500.61x = 187,944,239.46
  5. Step 5: Solve for x
    x = 187,944,239.46/15,500.61
  6. Step 6: Final answer
    x = 12,124.96

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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.