Home / 15,719.15-23,456.19-14,321.90

Finding the Fourth Proportional to 15,719.15, 23,456.19 and 14,321.90

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Solution

The fourth proportional to 15,719.15, 23,456.19 and 14,321.90 is: 21,371.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,719.15 : 23,456.19 = 14,321.90 : x
  2. Step 2: Convert to fraction form
    15,719.15/23,456.19 = 14,321.90/x
  3. Step 3: Cross multiply
    15,719.15x = 23,456.19 × 14,321.90
  4. Step 4: Simplify right side
    15,719.15x = 335,937,090.28
  5. Step 5: Solve for x
    x = 335,937,090.28/15,719.15
  6. Step 6: Final answer
    x = 21,371.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.