Home / 38,409.47-53,005.29-21,414.78

Finding the Fourth Proportional to 38,409.47, 53,005.29 and 21,414.78

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Solution

The fourth proportional to 38,409.47, 53,005.29 and 21,414.78 is: 29,552.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,409.47 : 53,005.29 = 21,414.78 : x
  2. Step 2: Convert to fraction form
    38,409.47/53,005.29 = 21,414.78/x
  3. Step 3: Cross multiply
    38,409.47x = 53,005.29 × 21,414.78
  4. Step 4: Simplify right side
    38,409.47x = 1,135,096,543.88
  5. Step 5: Solve for x
    x = 1,135,096,543.88/38,409.47
  6. Step 6: Final answer
    x = 29,552.52

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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.