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Finding the Fourth Proportional to 18,510.78, 25,544.91 and 10,127.28

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Solution

The fourth proportional to 18,510.78, 25,544.91 and 10,127.28 is: 13,975.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,510.78 : 25,544.91 = 10,127.28 : x
  2. Step 2: Convert to fraction form
    18,510.78/25,544.91 = 10,127.28/x
  3. Step 3: Cross multiply
    18,510.78x = 25,544.91 × 10,127.28
  4. Step 4: Simplify right side
    18,510.78x = 258,700,456.14
  5. Step 5: Solve for x
    x = 258,700,456.14/18,510.78
  6. Step 6: Final answer
    x = 13,975.66

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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.