Home / 38,434.60-53,034.45-21,436.85

Finding the Fourth Proportional to 38,434.60, 53,034.45 and 21,436.85

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Solution

The fourth proportional to 38,434.60, 53,034.45 and 21,436.85 is: 29,579.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,434.60 : 53,034.45 = 21,436.85 : x
  2. Step 2: Convert to fraction form
    38,434.60/53,034.45 = 21,436.85/x
  3. Step 3: Cross multiply
    38,434.60x = 53,034.45 × 21,436.85
  4. Step 4: Simplify right side
    38,434.60x = 1,136,891,601.68
  5. Step 5: Solve for x
    x = 1,136,891,601.68/38,434.60
  6. Step 6: Final answer
    x = 29,579.90

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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.