Home / 38,573.28-57,858.80-12,279.60

Finding the Fourth Proportional to 38,573.28, 57,858.80 and 12,279.60

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Solution

The fourth proportional to 38,573.28, 57,858.80 and 12,279.60 is: 18,419.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,573.28 : 57,858.80 = 12,279.60 : x
  2. Step 2: Convert to fraction form
    38,573.28/57,858.80 = 12,279.60/x
  3. Step 3: Cross multiply
    38,573.28x = 57,858.80 × 12,279.60
  4. Step 4: Simplify right side
    38,573.28x = 710,482,920.48
  5. Step 5: Solve for x
    x = 710,482,920.48/38,573.28
  6. Step 6: Final answer
    x = 18,419.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.