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Finding the Fourth Proportional to 15,162.18, 20,937 and 9,506.64

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Solution

The fourth proportional to 15,162.18, 20,937 and 9,506.64 is: 13,127.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,162.18 : 20,937 = 9,506.64 : x
  2. Step 2: Convert to fraction form
    15,162.18/20,937 = 9,506.64/x
  3. Step 3: Cross multiply
    15,162.18x = 20,937 × 9,506.64
  4. Step 4: Simplify right side
    15,162.18x = 199,040,521.68
  5. Step 5: Solve for x
    x = 199,040,521.68/15,162.18
  6. Step 6: Final answer
    x = 13,127.43

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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.