Home / 15,661.48-23,489.66-5,131.40

Finding the Fourth Proportional to 15,661.48, 23,489.66 and 5,131.40

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Solution

The fourth proportional to 15,661.48, 23,489.66 and 5,131.40 is: 7,696.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,661.48 : 23,489.66 = 5,131.40 : x
  2. Step 2: Convert to fraction form
    15,661.48/23,489.66 = 5,131.40/x
  3. Step 3: Cross multiply
    15,661.48x = 23,489.66 × 5,131.40
  4. Step 4: Simplify right side
    15,661.48x = 120,534,841.32
  5. Step 5: Solve for x
    x = 120,534,841.32/15,661.48
  6. Step 6: Final answer
    x = 7,696.26

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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.