Home / 21,545.13-29,722.56-12,588.60

Finding the Fourth Proportional to 21,545.13, 29,722.56 and 12,588.60

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Solution

The fourth proportional to 21,545.13, 29,722.56 and 12,588.60 is: 17,366.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,545.13 : 29,722.56 = 12,588.60 : x
  2. Step 2: Convert to fraction form
    21,545.13/29,722.56 = 12,588.60/x
  3. Step 3: Cross multiply
    21,545.13x = 29,722.56 × 12,588.60
  4. Step 4: Simplify right side
    21,545.13x = 374,165,418.82
  5. Step 5: Solve for x
    x = 374,165,418.82/21,545.13
  6. Step 6: Final answer
    x = 17,366.59

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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.