Home / 28,120.11-42,179.12-7,060.29

Finding the Fourth Proportional to 28,120.11, 42,179.12 and 7,060.29

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Solution

The fourth proportional to 28,120.11, 42,179.12 and 7,060.29 is: 10,590.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,120.11 : 42,179.12 = 7,060.29 : x
  2. Step 2: Convert to fraction form
    28,120.11/42,179.12 = 7,060.29/x
  3. Step 3: Cross multiply
    28,120.11x = 42,179.12 × 7,060.29
  4. Step 4: Simplify right side
    28,120.11x = 297,796,783.84
  5. Step 5: Solve for x
    x = 297,796,783.84/28,120.11
  6. Step 6: Final answer
    x = 10,590.17

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Half scale
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Double scale
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Similar ratio
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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.