Home / 12,347.28-18,505.78-6,500.16

Finding the Fourth Proportional to 12,347.28, 18,505.78 and 6,500.16

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Solution

The fourth proportional to 12,347.28, 18,505.78 and 6,500.16 is: 9,742.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,347.28 : 18,505.78 = 6,500.16 : x
  2. Step 2: Convert to fraction form
    12,347.28/18,505.78 = 6,500.16/x
  3. Step 3: Cross multiply
    12,347.28x = 18,505.78 × 6,500.16
  4. Step 4: Simplify right side
    12,347.28x = 120,290,530.92
  5. Step 5: Solve for x
    x = 120,290,530.92/12,347.28
  6. Step 6: Final answer
    x = 9,742.27

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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.