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Finding the Fourth Proportional to 13,510.64, 18,644.07 and 7,542.17

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Solution

The fourth proportional to 13,510.64, 18,644.07 and 7,542.17 is: 10,407.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,510.64 : 18,644.07 = 7,542.17 : x
  2. Step 2: Convert to fraction form
    13,510.64/18,644.07 = 7,542.17/x
  3. Step 3: Cross multiply
    13,510.64x = 18,644.07 × 7,542.17
  4. Step 4: Simplify right side
    13,510.64x = 140,616,652.21
  5. Step 5: Solve for x
    x = 140,616,652.21/13,510.64
  6. Step 6: Final answer
    x = 10,407.85

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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.