Home / 18,758.75-28,124.13-6,271.38

Finding the Fourth Proportional to 18,758.75, 28,124.13 and 6,271.38

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Solution

The fourth proportional to 18,758.75, 28,124.13 and 6,271.38 is: 9,402.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,758.75 : 28,124.13 = 6,271.38 : x
  2. Step 2: Convert to fraction form
    18,758.75/28,124.13 = 6,271.38/x
  3. Step 3: Cross multiply
    18,758.75x = 28,124.13 × 6,271.38
  4. Step 4: Simplify right side
    18,758.75x = 176,377,106.40
  5. Step 5: Solve for x
    x = 176,377,106.40/18,758.75
  6. Step 6: Final answer
    x = 9,402.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.