Home / 15,222.83-21,008.49-8,508.74

Finding the Fourth Proportional to 15,222.83, 21,008.49 and 8,508.74

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Solution

The fourth proportional to 15,222.83, 21,008.49 and 8,508.74 is: 11,742.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,222.83 : 21,008.49 = 8,508.74 : x
  2. Step 2: Convert to fraction form
    15,222.83/21,008.49 = 8,508.74/x
  3. Step 3: Cross multiply
    15,222.83x = 21,008.49 × 8,508.74
  4. Step 4: Simplify right side
    15,222.83x = 178,755,674.16
  5. Step 5: Solve for x
    x = 178,755,674.16/15,222.83
  6. Step 6: Final answer
    x = 11,742.61

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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.