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Finding the Fourth Proportional to 16,655.74, 22,981.53 and 9,939.22

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Solution

The fourth proportional to 16,655.74, 22,981.53 and 9,939.22 is: 13,714.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,655.74 : 22,981.53 = 9,939.22 : x
  2. Step 2: Convert to fraction form
    16,655.74/22,981.53 = 9,939.22/x
  3. Step 3: Cross multiply
    16,655.74x = 22,981.53 × 9,939.22
  4. Step 4: Simplify right side
    16,655.74x = 228,418,482.61
  5. Step 5: Solve for x
    x = 228,418,482.61/16,655.74
  6. Step 6: Final answer
    x = 13,714.10

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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.