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Finding the Fourth Proportional to 12,351.68, 17,060.28 and 8,989.16

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Solution

The fourth proportional to 12,351.68, 17,060.28 and 8,989.16 is: 12,415.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,351.68 : 17,060.28 = 8,989.16 : x
  2. Step 2: Convert to fraction form
    12,351.68/17,060.28 = 8,989.16/x
  3. Step 3: Cross multiply
    12,351.68x = 17,060.28 × 8,989.16
  4. Step 4: Simplify right side
    12,351.68x = 153,357,586.56
  5. Step 5: Solve for x
    x = 153,357,586.56/12,351.68
  6. Step 6: Final answer
    x = 12,415.93

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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.