Home / 21,545.06-29,730.66-12,115.04

Finding the Fourth Proportional to 21,545.06, 29,730.66 and 12,115.04

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Solution

The fourth proportional to 21,545.06, 29,730.66 and 12,115.04 is: 16,717.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,545.06 : 29,730.66 = 12,115.04 : x
  2. Step 2: Convert to fraction form
    21,545.06/29,730.66 = 12,115.04/x
  3. Step 3: Cross multiply
    21,545.06x = 29,730.66 × 12,115.04
  4. Step 4: Simplify right side
    21,545.06x = 360,188,135.13
  5. Step 5: Solve for x
    x = 360,188,135.13/21,545.06
  6. Step 6: Final answer
    x = 16,717.90

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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.