Home / 25,165.21-34,727.89-13,680.22

Finding the Fourth Proportional to 25,165.21, 34,727.89 and 13,680.22

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Solution

The fourth proportional to 25,165.21, 34,727.89 and 13,680.22 is: 18,878.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,165.21 : 34,727.89 = 13,680.22 : x
  2. Step 2: Convert to fraction form
    25,165.21/34,727.89 = 13,680.22/x
  3. Step 3: Cross multiply
    25,165.21x = 34,727.89 × 13,680.22
  4. Step 4: Simplify right side
    25,165.21x = 475,085,047.41
  5. Step 5: Solve for x
    x = 475,085,047.41/25,165.21
  6. Step 6: Final answer
    x = 18,878.65

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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.