Home / 23,129.15-31,918.17-12,518.96

Finding the Fourth Proportional to 23,129.15, 31,918.17 and 12,518.96

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Solution

The fourth proportional to 23,129.15, 31,918.17 and 12,518.96 is: 17,276.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,129.15 : 31,918.17 = 12,518.96 : x
  2. Step 2: Convert to fraction form
    23,129.15/31,918.17 = 12,518.96/x
  3. Step 3: Cross multiply
    23,129.15x = 31,918.17 × 12,518.96
  4. Step 4: Simplify right side
    23,129.15x = 399,582,293.50
  5. Step 5: Solve for x
    x = 399,582,293.50/23,129.15
  6. Step 6: Final answer
    x = 17,276.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.