Home / 19,987.20-29,947.72-17,926.84

Finding the Fourth Proportional to 19,987.20, 29,947.72 and 17,926.84

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Solution

The fourth proportional to 19,987.20, 29,947.72 and 17,926.84 is: 26,860.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,987.20 : 29,947.72 = 17,926.84 : x
  2. Step 2: Convert to fraction form
    19,987.20/29,947.72 = 17,926.84/x
  3. Step 3: Cross multiply
    19,987.20x = 29,947.72 × 17,926.84
  4. Step 4: Simplify right side
    19,987.20x = 536,867,984.80
  5. Step 5: Solve for x
    x = 536,867,984.80/19,987.20
  6. Step 6: Final answer
    x = 26,860.59

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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.