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Finding the Fourth Proportional to 19,956.48, 29,934.88 and 8,860.20

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Solution

The fourth proportional to 19,956.48, 29,934.88 and 8,860.20 is: 13,290.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,956.48 : 29,934.88 = 8,860.20 : x
  2. Step 2: Convert to fraction form
    19,956.48/29,934.88 = 8,860.20/x
  3. Step 3: Cross multiply
    19,956.48x = 29,934.88 × 8,860.20
  4. Step 4: Simplify right side
    19,956.48x = 265,229,023.78
  5. Step 5: Solve for x
    x = 265,229,023.78/19,956.48
  6. Step 6: Final answer
    x = 13,290.37

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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.