Home / 15,517.68-21,414.72-8,444.40

Finding the Fourth Proportional to 15,517.68, 21,414.72 and 8,444.40

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Solution

The fourth proportional to 15,517.68, 21,414.72 and 8,444.40 is: 11,653.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,517.68 : 21,414.72 = 8,444.40 : x
  2. Step 2: Convert to fraction form
    15,517.68/21,414.72 = 8,444.40/x
  3. Step 3: Cross multiply
    15,517.68x = 21,414.72 × 8,444.40
  4. Step 4: Simplify right side
    15,517.68x = 180,834,461.57
  5. Step 5: Solve for x
    x = 180,834,461.57/15,517.68
  6. Step 6: Final answer
    x = 11,653.45

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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.