Home / 31,813.04-43,921.96-20,502.32

Finding the Fourth Proportional to 31,813.04, 43,921.96 and 20,502.32

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Solution

The fourth proportional to 31,813.04, 43,921.96 and 20,502.32 is: 28,306.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,813.04 : 43,921.96 = 20,502.32 : x
  2. Step 2: Convert to fraction form
    31,813.04/43,921.96 = 20,502.32/x
  3. Step 3: Cross multiply
    31,813.04x = 43,921.96 × 20,502.32
  4. Step 4: Simplify right side
    31,813.04x = 900,502,078.95
  5. Step 5: Solve for x
    x = 900,502,078.95/31,813.04
  6. Step 6: Final answer
    x = 28,306.07

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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.