Home / 18,717.38-28,075.98-7,621.46

Finding the Fourth Proportional to 18,717.38, 28,075.98 and 7,621.46

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Solution

The fourth proportional to 18,717.38, 28,075.98 and 7,621.46 is: 11,432.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,717.38 : 28,075.98 = 7,621.46 : x
  2. Step 2: Convert to fraction form
    18,717.38/28,075.98 = 7,621.46/x
  3. Step 3: Cross multiply
    18,717.38x = 28,075.98 × 7,621.46
  4. Step 4: Simplify right side
    18,717.38x = 213,979,958.53
  5. Step 5: Solve for x
    x = 213,979,958.53/18,717.38
  6. Step 6: Final answer
    x = 11,432.15

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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.