Home / 21,079.38-29,089.26-11,648.10

Finding the Fourth Proportional to 21,079.38, 29,089.26 and 11,648.10

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Solution

The fourth proportional to 21,079.38, 29,089.26 and 11,648.10 is: 16,074.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,079.38 : 29,089.26 = 11,648.10 : x
  2. Step 2: Convert to fraction form
    21,079.38/29,089.26 = 11,648.10/x
  3. Step 3: Cross multiply
    21,079.38x = 29,089.26 × 11,648.10
  4. Step 4: Simplify right side
    21,079.38x = 338,834,609.41
  5. Step 5: Solve for x
    x = 338,834,609.41/21,079.38
  6. Step 6: Final answer
    x = 16,074.22

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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.