Home / 28,357.60-42,488.88-20,023.78

Finding the Fourth Proportional to 28,357.60, 42,488.88 and 20,023.78

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Solution

The fourth proportional to 28,357.60, 42,488.88 and 20,023.78 is: 30,002.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,357.60 : 42,488.88 = 20,023.78 : x
  2. Step 2: Convert to fraction form
    28,357.60/42,488.88 = 20,023.78/x
  3. Step 3: Cross multiply
    28,357.60x = 42,488.88 × 20,023.78
  4. Step 4: Simplify right side
    28,357.60x = 850,787,985.57
  5. Step 5: Solve for x
    x = 850,787,985.57/28,357.60
  6. Step 6: Final answer
    x = 30,002.12

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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.