Home / 38,432.85-53,037.62-21,438.20

Finding the Fourth Proportional to 38,432.85, 53,037.62 and 21,438.20

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Solution

The fourth proportional to 38,432.85, 53,037.62 and 21,438.20 is: 29,584.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,432.85 : 53,037.62 = 21,438.20 : x
  2. Step 2: Convert to fraction form
    38,432.85/53,037.62 = 21,438.20/x
  3. Step 3: Cross multiply
    38,432.85x = 53,037.62 × 21,438.20
  4. Step 4: Simplify right side
    38,432.85x = 1,137,031,210.88
  5. Step 5: Solve for x
    x = 1,137,031,210.88/38,432.85
  6. Step 6: Final answer
    x = 29,584.88

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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.