Home / 19,331.72-28,989.36-6,854.88

Finding the Fourth Proportional to 19,331.72, 28,989.36 and 6,854.88

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Solution

The fourth proportional to 19,331.72, 28,989.36 and 6,854.88 is: 10,279.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,331.72 : 28,989.36 = 6,854.88 : x
  2. Step 2: Convert to fraction form
    19,331.72/28,989.36 = 6,854.88/x
  3. Step 3: Cross multiply
    19,331.72x = 28,989.36 × 6,854.88
  4. Step 4: Simplify right side
    19,331.72x = 198,718,584.08
  5. Step 5: Solve for x
    x = 198,718,584.08/19,331.72
  6. Step 6: Final answer
    x = 10,279.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.