Home / 21,616.27-29,837.11-12,666.68

Finding the Fourth Proportional to 21,616.27, 29,837.11 and 12,666.68

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Solution

The fourth proportional to 21,616.27, 29,837.11 and 12,666.68 is: 17,483.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,616.27 : 29,837.11 = 12,666.68 : x
  2. Step 2: Convert to fraction form
    21,616.27/29,837.11 = 12,666.68/x
  3. Step 3: Cross multiply
    21,616.27x = 29,837.11 × 12,666.68
  4. Step 4: Simplify right side
    21,616.27x = 377,937,079.28
  5. Step 5: Solve for x
    x = 377,937,079.28/21,616.27
  6. Step 6: Final answer
    x = 17,483.92

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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.