Home / 38,142.11-52,639.21-21,151.68

Finding the Fourth Proportional to 38,142.11, 52,639.21 and 21,151.68

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Solution

The fourth proportional to 38,142.11, 52,639.21 and 21,151.68 is: 29,191.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,142.11 : 52,639.21 = 21,151.68 : x
  2. Step 2: Convert to fraction form
    38,142.11/52,639.21 = 21,151.68/x
  3. Step 3: Cross multiply
    38,142.11x = 52,639.21 × 21,151.68
  4. Step 4: Simplify right side
    38,142.11x = 1,113,407,725.37
  5. Step 5: Solve for x
    x = 1,113,407,725.37/38,142.11
  6. Step 6: Final answer
    x = 29,191.04

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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.