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Finding the Fourth Proportional to 12,589.84, 17,373.24 and 7,284.28

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Solution

The fourth proportional to 12,589.84, 17,373.24 and 7,284.28 is: 10,051.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,589.84 : 17,373.24 = 7,284.28 : x
  2. Step 2: Convert to fraction form
    12,589.84/17,373.24 = 7,284.28/x
  3. Step 3: Cross multiply
    12,589.84x = 17,373.24 × 7,284.28
  4. Step 4: Simplify right side
    12,589.84x = 126,551,544.67
  5. Step 5: Solve for x
    x = 126,551,544.67/12,589.84
  6. Step 6: Final answer
    x = 10,051.88

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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.