Home / 18,680.56-25,789.72-12,401.52

Finding the Fourth Proportional to 18,680.56, 25,789.72 and 12,401.52

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Solution

The fourth proportional to 18,680.56, 25,789.72 and 12,401.52 is: 17,121.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,680.56 : 25,789.72 = 12,401.52 : x
  2. Step 2: Convert to fraction form
    18,680.56/25,789.72 = 12,401.52/x
  3. Step 3: Cross multiply
    18,680.56x = 25,789.72 × 12,401.52
  4. Step 4: Simplify right side
    18,680.56x = 319,831,728.37
  5. Step 5: Solve for x
    x = 319,831,728.37/18,680.56
  6. Step 6: Final answer
    x = 17,121.10

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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.