Home / 31,615.62-43,635.68-20,299.43

Finding the Fourth Proportional to 31,615.62, 43,635.68 and 20,299.43

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Solution

The fourth proportional to 31,615.62, 43,635.68 and 20,299.43 is: 28,017.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,615.62 : 43,635.68 = 20,299.43 : x
  2. Step 2: Convert to fraction form
    31,615.62/43,635.68 = 20,299.43/x
  3. Step 3: Cross multiply
    31,615.62x = 43,635.68 × 20,299.43
  4. Step 4: Simplify right side
    31,615.62x = 885,779,111.99
  5. Step 5: Solve for x
    x = 885,779,111.99/31,615.62
  6. Step 6: Final answer
    x = 28,017.14

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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.