Home / 13,552.11-18,701.19-7,886.61

Finding the Fourth Proportional to 13,552.11, 18,701.19 and 7,886.61

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Solution

The fourth proportional to 13,552.11, 18,701.19 and 7,886.61 is: 10,883.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,552.11 : 18,701.19 = 7,886.61 : x
  2. Step 2: Convert to fraction form
    13,552.11/18,701.19 = 7,886.61/x
  3. Step 3: Cross multiply
    13,552.11x = 18,701.19 × 7,886.61
  4. Step 4: Simplify right side
    13,552.11x = 147,488,992.07
  5. Step 5: Solve for x
    x = 147,488,992.07/13,552.11
  6. Step 6: Final answer
    x = 10,883.10

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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.