Home / 25,515.45-38,217.78-12,340.17

Finding the Fourth Proportional to 25,515.45, 38,217.78 and 12,340.17

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Solution

The fourth proportional to 25,515.45, 38,217.78 and 12,340.17 is: 18,483.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,515.45 : 38,217.78 = 12,340.17 : x
  2. Step 2: Convert to fraction form
    25,515.45/38,217.78 = 12,340.17/x
  3. Step 3: Cross multiply
    25,515.45x = 38,217.78 × 12,340.17
  4. Step 4: Simplify right side
    25,515.45x = 471,613,902.22
  5. Step 5: Solve for x
    x = 471,613,902.22/25,515.45
  6. Step 6: Final answer
    x = 18,483.46

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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.