Home / 38,142.54-52,639.82-21,152.11

Finding the Fourth Proportional to 38,142.54, 52,639.82 and 21,152.11

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Solution

The fourth proportional to 38,142.54, 52,639.82 and 21,152.11 is: 29,191.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,142.54 : 52,639.82 = 21,152.11 : x
  2. Step 2: Convert to fraction form
    38,142.54/52,639.82 = 21,152.11/x
  3. Step 3: Cross multiply
    38,142.54x = 52,639.82 × 21,152.11
  4. Step 4: Simplify right side
    38,142.54x = 1,113,443,263.02
  5. Step 5: Solve for x
    x = 1,113,443,263.02/38,142.54
  6. Step 6: Final answer
    x = 29,191.64

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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.