Home / 38,445.20-57,700.20-18,740.60

Finding the Fourth Proportional to 38,445.20, 57,700.20 and 18,740.60

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Solution

The fourth proportional to 38,445.20, 57,700.20 and 18,740.60 is: 28,126.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,445.20 : 57,700.20 = 18,740.60 : x
  2. Step 2: Convert to fraction form
    38,445.20/57,700.20 = 18,740.60/x
  3. Step 3: Cross multiply
    38,445.20x = 57,700.20 × 18,740.60
  4. Step 4: Simplify right side
    38,445.20x = 1,081,336,368.12
  5. Step 5: Solve for x
    x = 1,081,336,368.12/38,445.20
  6. Step 6: Final answer
    x = 28,126.69

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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.