Home / 15,815.13-23,720.87-4,129.26

Finding the Fourth Proportional to 15,815.13, 23,720.87 and 4,129.26

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Solution

The fourth proportional to 15,815.13, 23,720.87 and 4,129.26 is: 6,193.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,815.13 : 23,720.87 = 4,129.26 : x
  2. Step 2: Convert to fraction form
    15,815.13/23,720.87 = 4,129.26/x
  3. Step 3: Cross multiply
    15,815.13x = 23,720.87 × 4,129.26
  4. Step 4: Simplify right side
    15,815.13x = 97,949,619.01
  5. Step 5: Solve for x
    x = 97,949,619.01/15,815.13
  6. Step 6: Final answer
    x = 6,193.41

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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.