Home / 15,002.76-20,702.61-8,715.54

Finding the Fourth Proportional to 15,002.76, 20,702.61 and 8,715.54

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Solution

The fourth proportional to 15,002.76, 20,702.61 and 8,715.54 is: 12,026.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,002.76 : 20,702.61 = 8,715.54 : x
  2. Step 2: Convert to fraction form
    15,002.76/20,702.61 = 8,715.54/x
  3. Step 3: Cross multiply
    15,002.76x = 20,702.61 × 8,715.54
  4. Step 4: Simplify right side
    15,002.76x = 180,434,425.56
  5. Step 5: Solve for x
    x = 180,434,425.56/15,002.76
  6. Step 6: Final answer
    x = 12,026.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.