Home / 10,233.20-15,328.20-8,505.20

Finding the Fourth Proportional to 10,233.20, 15,328.20 and 8,505.20

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Solution

The fourth proportional to 10,233.20, 15,328.20 and 8,505.20 is: 12,739.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,233.20 : 15,328.20 = 8,505.20 : x
  2. Step 2: Convert to fraction form
    10,233.20/15,328.20 = 8,505.20/x
  3. Step 3: Cross multiply
    10,233.20x = 15,328.20 × 8,505.20
  4. Step 4: Simplify right side
    10,233.20x = 130,369,406.64
  5. Step 5: Solve for x
    x = 130,369,406.64/10,233.20
  6. Step 6: Final answer
    x = 12,739.85

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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.