Home / 28,342.92-42,498.18-8,615.64

Finding the Fourth Proportional to 28,342.92, 42,498.18 and 8,615.64

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Solution

The fourth proportional to 28,342.92, 42,498.18 and 8,615.64 is: 12,918.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,342.92 : 42,498.18 = 8,615.64 : x
  2. Step 2: Convert to fraction form
    28,342.92/42,498.18 = 8,615.64/x
  3. Step 3: Cross multiply
    28,342.92x = 42,498.18 × 8,615.64
  4. Step 4: Simplify right side
    28,342.92x = 366,149,019.54
  5. Step 5: Solve for x
    x = 366,149,019.54/28,342.92
  6. Step 6: Final answer
    x = 12,918.54

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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.