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Finding the Fourth Proportional to 16,045.29, 22,143.69 and 8,971.29

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Solution

The fourth proportional to 16,045.29, 22,143.69 and 8,971.29 is: 12,381.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,045.29 : 22,143.69 = 8,971.29 : x
  2. Step 2: Convert to fraction form
    16,045.29/22,143.69 = 8,971.29/x
  3. Step 3: Cross multiply
    16,045.29x = 22,143.69 × 8,971.29
  4. Step 4: Simplify right side
    16,045.29x = 198,657,464.66
  5. Step 5: Solve for x
    x = 198,657,464.66/16,045.29
  6. Step 6: Final answer
    x = 12,381.05

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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.