Home / 18,747.72-25,870.78-10,988.80

Finding the Fourth Proportional to 18,747.72, 25,870.78 and 10,988.80

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Solution

The fourth proportional to 18,747.72, 25,870.78 and 10,988.80 is: 15,163.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,747.72 : 25,870.78 = 10,988.80 : x
  2. Step 2: Convert to fraction form
    18,747.72/25,870.78 = 10,988.80/x
  3. Step 3: Cross multiply
    18,747.72x = 25,870.78 × 10,988.80
  4. Step 4: Simplify right side
    18,747.72x = 284,288,827.26
  5. Step 5: Solve for x
    x = 284,288,827.26/18,747.72
  6. Step 6: Final answer
    x = 15,163.91

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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.