Home / 15,987.57-23,982.18-5,458.80

Finding the Fourth Proportional to 15,987.57, 23,982.18 and 5,458.80

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Solution

The fourth proportional to 15,987.57, 23,982.18 and 5,458.80 is: 8,188.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,987.57 : 23,982.18 = 5,458.80 : x
  2. Step 2: Convert to fraction form
    15,987.57/23,982.18 = 5,458.80/x
  3. Step 3: Cross multiply
    15,987.57x = 23,982.18 × 5,458.80
  4. Step 4: Simplify right side
    15,987.57x = 130,913,924.18
  5. Step 5: Solve for x
    x = 130,913,924.18/15,987.57
  6. Step 6: Final answer
    x = 8,188.48

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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.