Home / 11,555.97-15,948.05-8,718.36

Finding the Fourth Proportional to 11,555.97, 15,948.05 and 8,718.36

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Solution

The fourth proportional to 11,555.97, 15,948.05 and 8,718.36 is: 12,031.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,555.97 : 15,948.05 = 8,718.36 : x
  2. Step 2: Convert to fraction form
    11,555.97/15,948.05 = 8,718.36/x
  3. Step 3: Cross multiply
    11,555.97x = 15,948.05 × 8,718.36
  4. Step 4: Simplify right side
    11,555.97x = 139,040,797.61
  5. Step 5: Solve for x
    x = 139,040,797.61/11,555.97
  6. Step 6: Final answer
    x = 12,031.95

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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.