Home / 18,939.69-26,132.54-10,872.87

Finding the Fourth Proportional to 18,939.69, 26,132.54 and 10,872.87

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Solution

The fourth proportional to 18,939.69, 26,132.54 and 10,872.87 is: 15,002.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,939.69 : 26,132.54 = 10,872.87 : x
  2. Step 2: Convert to fraction form
    18,939.69/26,132.54 = 10,872.87/x
  3. Step 3: Cross multiply
    18,939.69x = 26,132.54 × 10,872.87
  4. Step 4: Simplify right side
    18,939.69x = 284,135,655.83
  5. Step 5: Solve for x
    x = 284,135,655.83/18,939.69
  6. Step 6: Final answer
    x = 15,002.13

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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.