Home / 38,142.20-52,639.34-21,151.77

Finding the Fourth Proportional to 38,142.20, 52,639.34 and 21,151.77

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Solution

The fourth proportional to 38,142.20, 52,639.34 and 21,151.77 is: 29,191.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,142.20 : 52,639.34 = 21,151.77 : x
  2. Step 2: Convert to fraction form
    38,142.20/52,639.34 = 21,151.77/x
  3. Step 3: Cross multiply
    38,142.20x = 52,639.34 × 21,151.77
  4. Step 4: Simplify right side
    38,142.20x = 1,113,415,212.63
  5. Step 5: Solve for x
    x = 1,113,415,212.63/38,142.20
  6. Step 6: Final answer
    x = 29,191.16

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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.