Home / 18,265.11-25,205.91-9,881.61

Finding the Fourth Proportional to 18,265.11, 25,205.91 and 9,881.61

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Solution

The fourth proportional to 18,265.11, 25,205.91 and 9,881.61 is: 13,636.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,265.11 : 25,205.91 = 9,881.61 : x
  2. Step 2: Convert to fraction form
    18,265.11/25,205.91 = 9,881.61/x
  3. Step 3: Cross multiply
    18,265.11x = 25,205.91 × 9,881.61
  4. Step 4: Simplify right side
    18,265.11x = 249,074,972.32
  5. Step 5: Solve for x
    x = 249,074,972.32/18,265.11
  6. Step 6: Final answer
    x = 13,636.65

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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.