Home / 12,338.28-18,489.20-5,762.70

Finding the Fourth Proportional to 12,338.28, 18,489.20 and 5,762.70

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Solution

The fourth proportional to 12,338.28, 18,489.20 and 5,762.70 is: 8,635.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,338.28 : 18,489.20 = 5,762.70 : x
  2. Step 2: Convert to fraction form
    12,338.28/18,489.20 = 5,762.70/x
  3. Step 3: Cross multiply
    12,338.28x = 18,489.20 × 5,762.70
  4. Step 4: Simplify right side
    12,338.28x = 106,547,684.03
  5. Step 5: Solve for x
    x = 106,547,684.03/12,338.28
  6. Step 6: Final answer
    x = 8,635.54

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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.