Home / 19,479.92-26,884.76-12,771.20

Finding the Fourth Proportional to 19,479.92, 26,884.76 and 12,771.20

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Solution

The fourth proportional to 19,479.92, 26,884.76 and 12,771.20 is: 17,625.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,479.92 : 26,884.76 = 12,771.20 : x
  2. Step 2: Convert to fraction form
    19,479.92/26,884.76 = 12,771.20/x
  3. Step 3: Cross multiply
    19,479.92x = 26,884.76 × 12,771.20
  4. Step 4: Simplify right side
    19,479.92x = 343,350,646.91
  5. Step 5: Solve for x
    x = 343,350,646.91/19,479.92
  6. Step 6: Final answer
    x = 17,625.88

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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.