Home / 38,155.80-52,654.02-21,159.78

Finding the Fourth Proportional to 38,155.80, 52,654.02 and 21,159.78

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Solution

The fourth proportional to 38,155.80, 52,654.02 and 21,159.78 is: 29,199.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,155.80 : 52,654.02 = 21,159.78 : x
  2. Step 2: Convert to fraction form
    38,155.80/52,654.02 = 21,159.78/x
  3. Step 3: Cross multiply
    38,155.80x = 52,654.02 × 21,159.78
  4. Step 4: Simplify right side
    38,155.80x = 1,114,147,479.32
  5. Step 5: Solve for x
    x = 1,114,147,479.32/38,155.80
  6. Step 6: Final answer
    x = 29,199.95

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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.