Home / 20,498.60-28,289.44-11,425.36

Finding the Fourth Proportional to 20,498.60, 28,289.44 and 11,425.36

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Solution

The fourth proportional to 20,498.60, 28,289.44 and 11,425.36 is: 15,767.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,498.60 : 28,289.44 = 11,425.36 : x
  2. Step 2: Convert to fraction form
    20,498.60/28,289.44 = 11,425.36/x
  3. Step 3: Cross multiply
    20,498.60x = 28,289.44 × 11,425.36
  4. Step 4: Simplify right side
    20,498.60x = 323,217,036.20
  5. Step 5: Solve for x
    x = 323,217,036.20/20,498.60
  6. Step 6: Final answer
    x = 15,767.76

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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.