Home / 18,718.38-28,077.48-7,622.46

Finding the Fourth Proportional to 18,718.38, 28,077.48 and 7,622.46

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Solution

The fourth proportional to 18,718.38, 28,077.48 and 7,622.46 is: 11,433.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,718.38 : 28,077.48 = 7,622.46 : x
  2. Step 2: Convert to fraction form
    18,718.38/28,077.48 = 7,622.46/x
  3. Step 3: Cross multiply
    18,718.38x = 28,077.48 × 7,622.46
  4. Step 4: Simplify right side
    18,718.38x = 214,019,468.20
  5. Step 5: Solve for x
    x = 214,019,468.20/18,718.38
  6. Step 6: Final answer
    x = 11,433.65

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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.