Home / 28,288.60-42,424.80-8,562.40

Finding the Fourth Proportional to 28,288.60, 42,424.80 and 8,562.40

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Solution

The fourth proportional to 28,288.60, 42,424.80 and 8,562.40 is: 12,841.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,288.60 : 42,424.80 = 8,562.40 : x
  2. Step 2: Convert to fraction form
    28,288.60/42,424.80 = 8,562.40/x
  3. Step 3: Cross multiply
    28,288.60x = 42,424.80 × 8,562.40
  4. Step 4: Simplify right side
    28,288.60x = 363,258,107.52
  5. Step 5: Solve for x
    x = 363,258,107.52/28,288.60
  6. Step 6: Final answer
    x = 12,841.15

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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.