Home / 31,509.14-43,498.68-21,353.82

Finding the Fourth Proportional to 31,509.14, 43,498.68 and 21,353.82

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Solution

The fourth proportional to 31,509.14, 43,498.68 and 21,353.82 is: 29,479.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,509.14 : 43,498.68 = 21,353.82 : x
  2. Step 2: Convert to fraction form
    31,509.14/43,498.68 = 21,353.82/x
  3. Step 3: Cross multiply
    31,509.14x = 43,498.68 × 21,353.82
  4. Step 4: Simplify right side
    31,509.14x = 928,862,982.96
  5. Step 5: Solve for x
    x = 928,862,982.96/31,509.14
  6. Step 6: Final answer
    x = 29,479.16

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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.