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Finding the Fourth Proportional to 15,310.20, 21,127.50 and 8,596.20

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Solution

The fourth proportional to 15,310.20, 21,127.50 and 8,596.20 is: 11,862.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,310.20 : 21,127.50 = 8,596.20 : x
  2. Step 2: Convert to fraction form
    15,310.20/21,127.50 = 8,596.20/x
  3. Step 3: Cross multiply
    15,310.20x = 21,127.50 × 8,596.20
  4. Step 4: Simplify right side
    15,310.20x = 181,616,215.50
  5. Step 5: Solve for x
    x = 181,616,215.50/15,310.20
  6. Step 6: Final answer
    x = 11,862.43

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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.