Home / 10,270.20-15,405.30-9,708.60

Finding the Fourth Proportional to 10,270.20, 15,405.30 and 9,708.60

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Solution

The fourth proportional to 10,270.20, 15,405.30 and 9,708.60 is: 14,562.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,270.20 : 15,405.30 = 9,708.60 : x
  2. Step 2: Convert to fraction form
    10,270.20/15,405.30 = 9,708.60/x
  3. Step 3: Cross multiply
    10,270.20x = 15,405.30 × 9,708.60
  4. Step 4: Simplify right side
    10,270.20x = 149,563,895.58
  5. Step 5: Solve for x
    x = 149,563,895.58/10,270.20
  6. Step 6: Final answer
    x = 14,562.90

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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.