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Finding the Fourth Proportional to 15,082.34, 20,812.92 and 8,367.89

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Solution

The fourth proportional to 15,082.34, 20,812.92 and 8,367.89 is: 11,547.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,082.34 : 20,812.92 = 8,367.89 : x
  2. Step 2: Convert to fraction form
    15,082.34/20,812.92 = 8,367.89/x
  3. Step 3: Cross multiply
    15,082.34x = 20,812.92 × 8,367.89
  4. Step 4: Simplify right side
    15,082.34x = 174,160,225.14
  5. Step 5: Solve for x
    x = 174,160,225.14/15,082.34
  6. Step 6: Final answer
    x = 11,547.29

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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.