Home / 15,820.78-23,712.12-5,817.54

Finding the Fourth Proportional to 15,820.78, 23,712.12 and 5,817.54

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Solution

The fourth proportional to 15,820.78, 23,712.12 and 5,817.54 is: 8,719.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,820.78 : 23,712.12 = 5,817.54 : x
  2. Step 2: Convert to fraction form
    15,820.78/23,712.12 = 5,817.54/x
  3. Step 3: Cross multiply
    15,820.78x = 23,712.12 × 5,817.54
  4. Step 4: Simplify right side
    15,820.78x = 137,946,206.58
  5. Step 5: Solve for x
    x = 137,946,206.58/15,820.78
  6. Step 6: Final answer
    x = 8,719.31

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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.