Home / 18,411.91-25,429.75-13,398.62

Finding the Fourth Proportional to 18,411.91, 25,429.75 and 13,398.62

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Solution

The fourth proportional to 18,411.91, 25,429.75 and 13,398.62 is: 18,505.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,411.91 : 25,429.75 = 13,398.62 : x
  2. Step 2: Convert to fraction form
    18,411.91/25,429.75 = 13,398.62/x
  3. Step 3: Cross multiply
    18,411.91x = 25,429.75 × 13,398.62
  4. Step 4: Simplify right side
    18,411.91x = 340,723,396.30
  5. Step 5: Solve for x
    x = 340,723,396.30/18,411.91
  6. Step 6: Final answer
    x = 18,505.60

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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.