Home / 25,011.77-34,517.12-13,680.59

Finding the Fourth Proportional to 25,011.77, 34,517.12 and 13,680.59

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Solution

The fourth proportional to 25,011.77, 34,517.12 and 13,680.59 is: 18,879.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,011.77 : 34,517.12 = 13,680.59 : x
  2. Step 2: Convert to fraction form
    25,011.77/34,517.12 = 13,680.59/x
  3. Step 3: Cross multiply
    25,011.77x = 34,517.12 × 13,680.59
  4. Step 4: Simplify right side
    25,011.77x = 472,214,325.71
  5. Step 5: Solve for x
    x = 472,214,325.71/25,011.77
  6. Step 6: Final answer
    x = 18,879.69

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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.