Home / 18,858.55-28,291.47-6,380.61

Finding the Fourth Proportional to 18,858.55, 28,291.47 and 6,380.61

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Solution

The fourth proportional to 18,858.55, 28,291.47 and 6,380.61 is: 9,572.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,858.55 : 28,291.47 = 6,380.61 : x
  2. Step 2: Convert to fraction form
    18,858.55/28,291.47 = 6,380.61/x
  3. Step 3: Cross multiply
    18,858.55x = 28,291.47 × 6,380.61
  4. Step 4: Simplify right side
    18,858.55x = 180,516,730.30
  5. Step 5: Solve for x
    x = 180,516,730.30/18,858.55
  6. Step 6: Final answer
    x = 9,572.14

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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.