Home / 11,140.68-15,339.06-8,479.56

Finding the Fourth Proportional to 11,140.68, 15,339.06 and 8,479.56

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Solution

The fourth proportional to 11,140.68, 15,339.06 and 8,479.56 is: 11,675.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,140.68 : 15,339.06 = 8,479.56 : x
  2. Step 2: Convert to fraction form
    11,140.68/15,339.06 = 8,479.56/x
  3. Step 3: Cross multiply
    11,140.68x = 15,339.06 × 8,479.56
  4. Step 4: Simplify right side
    11,140.68x = 130,068,479.61
  5. Step 5: Solve for x
    x = 130,068,479.61/11,140.68
  6. Step 6: Final answer
    x = 11,675.09

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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.