Home / 30,081.28-41,468.68-21,100.92

Finding the Fourth Proportional to 30,081.28, 41,468.68 and 21,100.92

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Solution

The fourth proportional to 30,081.28, 41,468.68 and 21,100.92 is: 29,088.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,081.28 : 41,468.68 = 21,100.92 : x
  2. Step 2: Convert to fraction form
    30,081.28/41,468.68 = 21,100.92/x
  3. Step 3: Cross multiply
    30,081.28x = 41,468.68 × 21,100.92
  4. Step 4: Simplify right side
    30,081.28x = 875,027,299.19
  5. Step 5: Solve for x
    x = 875,027,299.19/30,081.28
  6. Step 6: Final answer
    x = 29,088.77

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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.