Home / 28,338.06-42,508.60-8,615.10

Finding the Fourth Proportional to 28,338.06, 42,508.60 and 8,615.10

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Solution

The fourth proportional to 28,338.06, 42,508.60 and 8,615.10 is: 12,923.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,338.06 : 42,508.60 = 8,615.10 : x
  2. Step 2: Convert to fraction form
    28,338.06/42,508.60 = 8,615.10/x
  3. Step 3: Cross multiply
    28,338.06x = 42,508.60 × 8,615.10
  4. Step 4: Simplify right side
    28,338.06x = 366,215,839.86
  5. Step 5: Solve for x
    x = 366,215,839.86/28,338.06
  6. Step 6: Final answer
    x = 12,923.11

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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.