Home / 25,011.38-34,516.60-13,680.20

Finding the Fourth Proportional to 25,011.38, 34,516.60 and 13,680.20

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Solution

The fourth proportional to 25,011.38, 34,516.60 and 13,680.20 is: 18,879.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,011.38 : 34,516.60 = 13,680.20 : x
  2. Step 2: Convert to fraction form
    25,011.38/34,516.60 = 13,680.20/x
  3. Step 3: Cross multiply
    25,011.38x = 34,516.60 × 13,680.20
  4. Step 4: Simplify right side
    25,011.38x = 472,194,043.41
  5. Step 5: Solve for x
    x = 472,194,043.41/25,011.38
  6. Step 6: Final answer
    x = 18,879.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.