Home / 15,234.67-21,023.78-8,520.28

Finding the Fourth Proportional to 15,234.67, 21,023.78 and 8,520.28

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Solution

The fourth proportional to 15,234.67, 21,023.78 and 8,520.28 is: 11,757.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,234.67 : 21,023.78 = 8,520.28 : x
  2. Step 2: Convert to fraction form
    15,234.67/21,023.78 = 8,520.28/x
  3. Step 3: Cross multiply
    15,234.67x = 21,023.78 × 8,520.28
  4. Step 4: Simplify right side
    15,234.67x = 179,128,461.00
  5. Step 5: Solve for x
    x = 179,128,461.00/15,234.67
  6. Step 6: Final answer
    x = 11,757.95

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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.