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Finding the Fourth Proportional to 28,230.52, 42,345.06 and 7,454.20

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Solution

The fourth proportional to 28,230.52, 42,345.06 and 7,454.20 is: 11,181.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,230.52 : 42,345.06 = 7,454.20 : x
  2. Step 2: Convert to fraction form
    28,230.52/42,345.06 = 7,454.20/x
  3. Step 3: Cross multiply
    28,230.52x = 42,345.06 × 7,454.20
  4. Step 4: Simplify right side
    28,230.52x = 315,648,546.25
  5. Step 5: Solve for x
    x = 315,648,546.25/28,230.52
  6. Step 6: Final answer
    x = 11,181.11

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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.