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Finding the Fourth Proportional to 10,873.36, 15,000.28 and 7,686.82

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Solution

The fourth proportional to 10,873.36, 15,000.28 and 7,686.82 is: 10,604.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,873.36 : 15,000.28 = 7,686.82 : x
  2. Step 2: Convert to fraction form
    10,873.36/15,000.28 = 7,686.82/x
  3. Step 3: Cross multiply
    10,873.36x = 15,000.28 × 7,686.82
  4. Step 4: Simplify right side
    10,873.36x = 115,304,452.31
  5. Step 5: Solve for x
    x = 115,304,452.31/10,873.36
  6. Step 6: Final answer
    x = 10,604.31

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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.