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Finding the Fourth Proportional to 13,038.28, 17,986.17 and 8,250.17

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Solution

The fourth proportional to 13,038.28, 17,986.17 and 8,250.17 is: 11,381.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,038.28 : 17,986.17 = 8,250.17 : x
  2. Step 2: Convert to fraction form
    13,038.28/17,986.17 = 8,250.17/x
  3. Step 3: Cross multiply
    13,038.28x = 17,986.17 × 8,250.17
  4. Step 4: Simplify right side
    13,038.28x = 148,388,955.92
  5. Step 5: Solve for x
    x = 148,388,955.92/13,038.28
  6. Step 6: Final answer
    x = 11,381.02

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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.