Home / 15,234.48-21,024.30-8,520.20

Finding the Fourth Proportional to 15,234.48, 21,024.30 and 8,520.20

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Solution

The fourth proportional to 15,234.48, 21,024.30 and 8,520.20 is: 11,758.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,234.48 : 21,024.30 = 8,520.20 : x
  2. Step 2: Convert to fraction form
    15,234.48/21,024.30 = 8,520.20/x
  3. Step 3: Cross multiply
    15,234.48x = 21,024.30 × 8,520.20
  4. Step 4: Simplify right side
    15,234.48x = 179,131,240.86
  5. Step 5: Solve for x
    x = 179,131,240.86/15,234.48
  6. Step 6: Final answer
    x = 11,758.28

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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.