Home / 18,872.68-28,315.08-5,726.40

Finding the Fourth Proportional to 18,872.68, 28,315.08 and 5,726.40

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Solution

The fourth proportional to 18,872.68, 28,315.08 and 5,726.40 is: 8,591.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,872.68 : 28,315.08 = 5,726.40 : x
  2. Step 2: Convert to fraction form
    18,872.68/28,315.08 = 5,726.40/x
  3. Step 3: Cross multiply
    18,872.68x = 28,315.08 × 5,726.40
  4. Step 4: Simplify right side
    18,872.68x = 162,143,474.11
  5. Step 5: Solve for x
    x = 162,143,474.11/18,872.68
  6. Step 6: Final answer
    x = 8,591.44

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1.5x scale

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.