Home / 20,498.78-28,290.99-11,548.01

Finding the Fourth Proportional to 20,498.78, 28,290.99 and 11,548.01

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Solution

The fourth proportional to 20,498.78, 28,290.99 and 11,548.01 is: 15,937.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,498.78 : 28,290.99 = 11,548.01 : x
  2. Step 2: Convert to fraction form
    20,498.78/28,290.99 = 11,548.01/x
  3. Step 3: Cross multiply
    20,498.78x = 28,290.99 × 11,548.01
  4. Step 4: Simplify right side
    20,498.78x = 326,704,493.97
  5. Step 5: Solve for x
    x = 326,704,493.97/20,498.78
  6. Step 6: Final answer
    x = 15,937.76

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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.