Home / 23,129.15-31,918.46-12,519

Finding the Fourth Proportional to 23,129.15, 31,918.46 and 12,519

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Solution

The fourth proportional to 23,129.15, 31,918.46 and 12,519 is: 17,276.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,129.15 : 31,918.46 = 12,519 : x
  2. Step 2: Convert to fraction form
    23,129.15/31,918.46 = 12,519/x
  3. Step 3: Cross multiply
    23,129.15x = 31,918.46 × 12,519
  4. Step 4: Simplify right side
    23,129.15x = 399,587,138.15
  5. Step 5: Solve for x
    x = 399,587,138.15/23,129.15
  6. Step 6: Final answer
    x = 17,276.35

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1.5x scale

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.