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Finding the Fourth Proportional to 28,010.10, 42,015.15 and 27,815.70

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Solution

The fourth proportional to 28,010.10, 42,015.15 and 27,815.70 is: 41,723.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,010.10 : 42,015.15 = 27,815.70 : x
  2. Step 2: Convert to fraction form
    28,010.10/42,015.15 = 27,815.70/x
  3. Step 3: Cross multiply
    28,010.10x = 42,015.15 × 27,815.70
  4. Step 4: Simplify right side
    28,010.10x = 1,168,680,807.86
  5. Step 5: Solve for x
    x = 1,168,680,807.86/28,010.10
  6. Step 6: Final answer
    x = 41,723.55

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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.