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Finding the Fourth Proportional to 20,759.97, 28,590.93 and 19,425.90

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Solution

The fourth proportional to 20,759.97, 28,590.93 and 19,425.90 is: 26,753.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,759.97 : 28,590.93 = 19,425.90 : x
  2. Step 2: Convert to fraction form
    20,759.97/28,590.93 = 19,425.90/x
  3. Step 3: Cross multiply
    20,759.97x = 28,590.93 × 19,425.90
  4. Step 4: Simplify right side
    20,759.97x = 555,404,547.09
  5. Step 5: Solve for x
    x = 555,404,547.09/20,759.97
  6. Step 6: Final answer
    x = 26,753.63

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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.