Home / 18,344.40-25,315.28-9,960.90

Finding the Fourth Proportional to 18,344.40, 25,315.28 and 9,960.90

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Solution

The fourth proportional to 18,344.40, 25,315.28 and 9,960.90 is: 13,746.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,344.40 : 25,315.28 = 9,960.90 : x
  2. Step 2: Convert to fraction form
    18,344.40/25,315.28 = 9,960.90/x
  3. Step 3: Cross multiply
    18,344.40x = 25,315.28 × 9,960.90
  4. Step 4: Simplify right side
    18,344.40x = 252,162,972.55
  5. Step 5: Solve for x
    x = 252,162,972.55/18,344.40
  6. Step 6: Final answer
    x = 13,746.05

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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.