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Finding the Fourth Proportional to 18,162.78, 25,061.84 and 10,203.47

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Solution

The fourth proportional to 18,162.78, 25,061.84 and 10,203.47 is: 14,079.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,162.78 : 25,061.84 = 10,203.47 : x
  2. Step 2: Convert to fraction form
    18,162.78/25,061.84 = 10,203.47/x
  3. Step 3: Cross multiply
    18,162.78x = 25,061.84 × 10,203.47
  4. Step 4: Simplify right side
    18,162.78x = 255,717,556.26
  5. Step 5: Solve for x
    x = 255,717,556.26/18,162.78
  6. Step 6: Final answer
    x = 14,079.21

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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.