Home / 20,590.97-28,415.52-11,159.52

Finding the Fourth Proportional to 20,590.97, 28,415.52 and 11,159.52

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Solution

The fourth proportional to 20,590.97, 28,415.52 and 11,159.52 is: 15,400.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,590.97 : 28,415.52 = 11,159.52 : x
  2. Step 2: Convert to fraction form
    20,590.97/28,415.52 = 11,159.52/x
  3. Step 3: Cross multiply
    20,590.97x = 28,415.52 × 11,159.52
  4. Step 4: Simplify right side
    20,590.97x = 317,103,563.75
  5. Step 5: Solve for x
    x = 317,103,563.75/20,590.97
  6. Step 6: Final answer
    x = 15,400.13

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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.