Home / 10,120.40-15,209.40-8,853.20

Finding the Fourth Proportional to 10,120.40, 15,209.40 and 8,853.20

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Solution

The fourth proportional to 10,120.40, 15,209.40 and 8,853.20 is: 13,304.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,120.40 : 15,209.40 = 8,853.20 : x
  2. Step 2: Convert to fraction form
    10,120.40/15,209.40 = 8,853.20/x
  3. Step 3: Cross multiply
    10,120.40x = 15,209.40 × 8,853.20
  4. Step 4: Simplify right side
    10,120.40x = 134,651,860.08
  5. Step 5: Solve for x
    x = 134,651,860.08/10,120.40
  6. Step 6: Final answer
    x = 13,304.99

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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.