Home / 20,291.92-28,002.31-11,339.50

Finding the Fourth Proportional to 20,291.92, 28,002.31 and 11,339.50

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Solution

The fourth proportional to 20,291.92, 28,002.31 and 11,339.50 is: 15,648.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,291.92 : 28,002.31 = 11,339.50 : x
  2. Step 2: Convert to fraction form
    20,291.92/28,002.31 = 11,339.50/x
  3. Step 3: Cross multiply
    20,291.92x = 28,002.31 × 11,339.50
  4. Step 4: Simplify right side
    20,291.92x = 317,532,212.18
  5. Step 5: Solve for x
    x = 317,532,212.18/20,291.92
  6. Step 6: Final answer
    x = 15,648.21

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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.