Home / 21,545.88-29,737.08-13,581.96

Finding the Fourth Proportional to 21,545.88, 29,737.08 and 13,581.96

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Solution

The fourth proportional to 21,545.88, 29,737.08 and 13,581.96 is: 18,745.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,545.88 : 29,737.08 = 13,581.96 : x
  2. Step 2: Convert to fraction form
    21,545.88/29,737.08 = 13,581.96/x
  3. Step 3: Cross multiply
    21,545.88x = 29,737.08 × 13,581.96
  4. Step 4: Simplify right side
    21,545.88x = 403,887,831.08
  5. Step 5: Solve for x
    x = 403,887,831.08/21,545.88
  6. Step 6: Final answer
    x = 18,745.48

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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.