Home / 31,678.11-43,676.06-20,327.58

Finding the Fourth Proportional to 31,678.11, 43,676.06 and 20,327.58

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Solution

The fourth proportional to 31,678.11, 43,676.06 and 20,327.58 is: 28,026.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,678.11 : 43,676.06 = 20,327.58 : x
  2. Step 2: Convert to fraction form
    31,678.11/43,676.06 = 20,327.58/x
  3. Step 3: Cross multiply
    31,678.11x = 43,676.06 × 20,327.58
  4. Step 4: Simplify right side
    31,678.11x = 887,828,502.10
  5. Step 5: Solve for x
    x = 887,828,502.10/31,678.11
  6. Step 6: Final answer
    x = 28,026.56

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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.