Home / 18,972.90-28,454.58-5,642.82

Finding the Fourth Proportional to 18,972.90, 28,454.58 and 5,642.82

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Solution

The fourth proportional to 18,972.90, 28,454.58 and 5,642.82 is: 8,462.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,972.90 : 28,454.58 = 5,642.82 : x
  2. Step 2: Convert to fraction form
    18,972.90/28,454.58 = 5,642.82/x
  3. Step 3: Cross multiply
    18,972.90x = 28,454.58 × 5,642.82
  4. Step 4: Simplify right side
    18,972.90x = 160,564,073.12
  5. Step 5: Solve for x
    x = 160,564,073.12/18,972.90
  6. Step 6: Final answer
    x = 8,462.81

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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.