Home / 20,237.28-27,929.28-12,281.52

Finding the Fourth Proportional to 20,237.28, 27,929.28 and 12,281.52

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Solution

The fourth proportional to 20,237.28, 27,929.28 and 12,281.52 is: 16,949.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,237.28 : 27,929.28 = 12,281.52 : x
  2. Step 2: Convert to fraction form
    20,237.28/27,929.28 = 12,281.52/x
  3. Step 3: Cross multiply
    20,237.28x = 27,929.28 × 12,281.52
  4. Step 4: Simplify right side
    20,237.28x = 343,014,010.91
  5. Step 5: Solve for x
    x = 343,014,010.91/20,237.28
  6. Step 6: Final answer
    x = 16,949.61

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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.