Home / 38,543.21-53,185.55-21,545.66

Finding the Fourth Proportional to 38,543.21, 53,185.55 and 21,545.66

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Solution

The fourth proportional to 38,543.21, 53,185.55 and 21,545.66 is: 29,730.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,543.21 : 53,185.55 = 21,545.66 : x
  2. Step 2: Convert to fraction form
    38,543.21/53,185.55 = 21,545.66/x
  3. Step 3: Cross multiply
    38,543.21x = 53,185.55 × 21,545.66
  4. Step 4: Simplify right side
    38,543.21x = 1,145,917,949.73
  5. Step 5: Solve for x
    x = 1,145,917,949.73/38,543.21
  6. Step 6: Final answer
    x = 29,730.73

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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.