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Finding the Fourth Proportional to 10,359.28, 15,429.83 and 10,143.28

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Solution

The fourth proportional to 10,359.28, 15,429.83 and 10,143.28 is: 15,108.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,359.28 : 15,429.83 = 10,143.28 : x
  2. Step 2: Convert to fraction form
    10,359.28/15,429.83 = 10,143.28/x
  3. Step 3: Cross multiply
    10,359.28x = 15,429.83 × 10,143.28
  4. Step 4: Simplify right side
    10,359.28x = 156,509,086.04
  5. Step 5: Solve for x
    x = 156,509,086.04/10,359.28
  6. Step 6: Final answer
    x = 15,108.10

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.