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Finding the Fourth Proportional to 23,405.80, 35,108.70 and 8,615.20

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Solution

The fourth proportional to 23,405.80, 35,108.70 and 8,615.20 is: 12,922.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,405.80 : 35,108.70 = 8,615.20 : x
  2. Step 2: Convert to fraction form
    23,405.80/35,108.70 = 8,615.20/x
  3. Step 3: Cross multiply
    23,405.80x = 35,108.70 × 8,615.20
  4. Step 4: Simplify right side
    23,405.80x = 302,468,472.24
  5. Step 5: Solve for x
    x = 302,468,472.24/23,405.80
  6. Step 6: Final answer
    x = 12,922.80

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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.