Home / 20,759.79-31,066.65-17,872.95

Finding the Fourth Proportional to 20,759.79, 31,066.65 and 17,872.95

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Solution

The fourth proportional to 20,759.79, 31,066.65 and 17,872.95 is: 26,746.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,759.79 : 31,066.65 = 17,872.95 : x
  2. Step 2: Convert to fraction form
    20,759.79/31,066.65 = 17,872.95/x
  3. Step 3: Cross multiply
    20,759.79x = 31,066.65 × 17,872.95
  4. Step 4: Simplify right side
    20,759.79x = 555,252,682.12
  5. Step 5: Solve for x
    x = 555,252,682.12/20,759.79
  6. Step 6: Final answer
    x = 26,746.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.