Home / 38,309.12-52,871.40-21,542

Finding the Fourth Proportional to 38,309.12, 52,871.40 and 21,542

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Solution

The fourth proportional to 38,309.12, 52,871.40 and 21,542 is: 29,730.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,309.12 : 52,871.40 = 21,542 : x
  2. Step 2: Convert to fraction form
    38,309.12/52,871.40 = 21,542/x
  3. Step 3: Cross multiply
    38,309.12x = 52,871.40 × 21,542
  4. Step 4: Simplify right side
    38,309.12x = 1,138,955,698.80
  5. Step 5: Solve for x
    x = 1,138,955,698.80/38,309.12
  6. Step 6: Final answer
    x = 29,730.67

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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.