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Finding the Fourth Proportional to 18,758.74, 28,124.13 and 6,271.37

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Solution

The fourth proportional to 18,758.74, 28,124.13 and 6,271.37 is: 9,402.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,758.74 : 28,124.13 = 6,271.37 : x
  2. Step 2: Convert to fraction form
    18,758.74/28,124.13 = 6,271.37/x
  3. Step 3: Cross multiply
    18,758.74x = 28,124.13 × 6,271.37
  4. Step 4: Simplify right side
    18,758.74x = 176,376,895.47
  5. Step 5: Solve for x
    x = 176,376,895.47/18,758.74
  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.