Home / 31,585.14-43,579.56-21,394.92

Finding the Fourth Proportional to 31,585.14, 43,579.56 and 21,394.92

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Solution

The fourth proportional to 31,585.14, 43,579.56 and 21,394.92 is: 29,519.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,585.14 : 43,579.56 = 21,394.92 : x
  2. Step 2: Convert to fraction form
    31,585.14/43,579.56 = 21,394.92/x
  3. Step 3: Cross multiply
    31,585.14x = 43,579.56 × 21,394.92
  4. Step 4: Simplify right side
    31,585.14x = 932,381,199.84
  5. Step 5: Solve for x
    x = 932,381,199.84/31,585.14
  6. Step 6: Final answer
    x = 29,519.62

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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.