Home / 10,292.40-15,439.68-6,393.60

Finding the Fourth Proportional to 10,292.40, 15,439.68 and 6,393.60

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Solution

The fourth proportional to 10,292.40, 15,439.68 and 6,393.60 is: 9,591.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,292.40 : 15,439.68 = 6,393.60 : x
  2. Step 2: Convert to fraction form
    10,292.40/15,439.68 = 6,393.60/x
  3. Step 3: Cross multiply
    10,292.40x = 15,439.68 × 6,393.60
  4. Step 4: Simplify right side
    10,292.40x = 98,715,138.05
  5. Step 5: Solve for x
    x = 98,715,138.05/10,292.40
  6. Step 6: Final answer
    x = 9,591.07

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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.