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Finding the Fourth Proportional to 28,011, 42,023.70 and 10,481.04

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Solution

The fourth proportional to 28,011, 42,023.70 and 10,481.04 is: 15,724.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,011 : 42,023.70 = 10,481.04 : x
  2. Step 2: Convert to fraction form
    28,011/42,023.70 = 10,481.04/x
  3. Step 3: Cross multiply
    28,011x = 42,023.70 × 10,481.04
  4. Step 4: Simplify right side
    28,011x = 440,452,080.65
  5. Step 5: Solve for x
    x = 440,452,080.65/28,011
  6. Step 6: Final answer
    x = 15,724.25

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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.