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Finding the Fourth Proportional to 16,955.88, 25,414.16 and 6,419.20

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Solution

The fourth proportional to 16,955.88, 25,414.16 and 6,419.20 is: 9,621.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,955.88 : 25,414.16 = 6,419.20 : x
  2. Step 2: Convert to fraction form
    16,955.88/25,414.16 = 6,419.20/x
  3. Step 3: Cross multiply
    16,955.88x = 25,414.16 × 6,419.20
  4. Step 4: Simplify right side
    16,955.88x = 163,138,527.89
  5. Step 5: Solve for x
    x = 163,138,527.89/16,955.88
  6. Step 6: Final answer
    x = 9,621.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.