Home / 30,219.13-41,659.08-21,238.76

Finding the Fourth Proportional to 30,219.13, 41,659.08 and 21,238.76

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Solution

The fourth proportional to 30,219.13, 41,659.08 and 21,238.76 is: 29,279.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,219.13 : 41,659.08 = 21,238.76 : x
  2. Step 2: Convert to fraction form
    30,219.13/41,659.08 = 21,238.76/x
  3. Step 3: Cross multiply
    30,219.13x = 41,659.08 × 21,238.76
  4. Step 4: Simplify right side
    30,219.13x = 884,787,201.94
  5. Step 5: Solve for x
    x = 884,787,201.94/30,219.13
  6. Step 6: Final answer
    x = 29,279.04

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.