Home / 21,146.38-29,182.90-11,714.94

Finding the Fourth Proportional to 21,146.38, 29,182.90 and 11,714.94

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Solution

The fourth proportional to 21,146.38, 29,182.90 and 11,714.94 is: 16,167.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,146.38 : 29,182.90 = 11,714.94 : x
  2. Step 2: Convert to fraction form
    21,146.38/29,182.90 = 11,714.94/x
  3. Step 3: Cross multiply
    21,146.38x = 29,182.90 × 11,714.94
  4. Step 4: Simplify right side
    21,146.38x = 341,875,922.53
  5. Step 5: Solve for x
    x = 341,875,922.53/21,146.38
  6. Step 6: Final answer
    x = 16,167.11

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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.