Home / 15,733.89-21,712.32-8,929.15

Finding the Fourth Proportional to 15,733.89, 21,712.32 and 8,929.15

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Solution

The fourth proportional to 15,733.89, 21,712.32 and 8,929.15 is: 12,321.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,733.89 : 21,712.32 = 8,929.15 : x
  2. Step 2: Convert to fraction form
    15,733.89/21,712.32 = 8,929.15/x
  3. Step 3: Cross multiply
    15,733.89x = 21,712.32 × 8,929.15
  4. Step 4: Simplify right side
    15,733.89x = 193,872,562.13
  5. Step 5: Solve for x
    x = 193,872,562.13/15,733.89
  6. Step 6: Final answer
    x = 12,321.97

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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.