Home / 20,404.98-28,161.76-11,454.68

Finding the Fourth Proportional to 20,404.98, 28,161.76 and 11,454.68

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Solution

The fourth proportional to 20,404.98, 28,161.76 and 11,454.68 is: 15,809.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,404.98 : 28,161.76 = 11,454.68 : x
  2. Step 2: Convert to fraction form
    20,404.98/28,161.76 = 11,454.68/x
  3. Step 3: Cross multiply
    20,404.98x = 28,161.76 × 11,454.68
  4. Step 4: Simplify right side
    20,404.98x = 322,583,949.04
  5. Step 5: Solve for x
    x = 322,583,949.04/20,404.98
  6. Step 6: Final answer
    x = 15,809.08

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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.