Home / 38,434.20-57,683.70-18,729.60

Finding the Fourth Proportional to 38,434.20, 57,683.70 and 18,729.60

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Solution

The fourth proportional to 38,434.20, 57,683.70 and 18,729.60 is: 28,110.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,434.20 : 57,683.70 = 18,729.60 : x
  2. Step 2: Convert to fraction form
    38,434.20/57,683.70 = 18,729.60/x
  3. Step 3: Cross multiply
    38,434.20x = 57,683.70 × 18,729.60
  4. Step 4: Simplify right side
    38,434.20x = 1,080,392,627.52
  5. Step 5: Solve for x
    x = 1,080,392,627.52/38,434.20
  6. Step 6: Final answer
    x = 28,110.19

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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.