Home / 31,308.72-43,206.48-18,731.04

Finding the Fourth Proportional to 31,308.72, 43,206.48 and 18,731.04

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Solution

The fourth proportional to 31,308.72, 43,206.48 and 18,731.04 is: 25,849.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,308.72 : 43,206.48 = 18,731.04 : x
  2. Step 2: Convert to fraction form
    31,308.72/43,206.48 = 18,731.04/x
  3. Step 3: Cross multiply
    31,308.72x = 43,206.48 × 18,731.04
  4. Step 4: Simplify right side
    31,308.72x = 809,302,305.14
  5. Step 5: Solve for x
    x = 809,302,305.14/31,308.72
  6. Step 6: Final answer
    x = 25,849.10

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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.