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Finding the Fourth Proportional to 17,912.12, 24,718.88 and 9,955.20

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Solution

The fourth proportional to 17,912.12, 24,718.88 and 9,955.20 is: 13,738.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,912.12 : 24,718.88 = 9,955.20 : x
  2. Step 2: Convert to fraction form
    17,912.12/24,718.88 = 9,955.20/x
  3. Step 3: Cross multiply
    17,912.12x = 24,718.88 × 9,955.20
  4. Step 4: Simplify right side
    17,912.12x = 246,081,394.18
  5. Step 5: Solve for x
    x = 246,081,394.18/17,912.12
  6. Step 6: Final answer
    x = 13,738.26

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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.