Home / 30,819.07-42,456.52-29,318.28

Finding the Fourth Proportional to 30,819.07, 42,456.52 and 29,318.28

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Solution

The fourth proportional to 30,819.07, 42,456.52 and 29,318.28 is: 40,389.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,819.07 : 42,456.52 = 29,318.28 : x
  2. Step 2: Convert to fraction form
    30,819.07/42,456.52 = 29,318.28/x
  3. Step 3: Cross multiply
    30,819.07x = 42,456.52 × 29,318.28
  4. Step 4: Simplify right side
    30,819.07x = 1,244,752,141.19
  5. Step 5: Solve for x
    x = 1,244,752,141.19/30,819.07
  6. Step 6: Final answer
    x = 40,389.02

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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.