Home / 31,683.11-43,705.17-20,354.29

Finding the Fourth Proportional to 31,683.11, 43,705.17 and 20,354.29

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Solution

The fourth proportional to 31,683.11, 43,705.17 and 20,354.29 is: 28,077.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,683.11 : 43,705.17 = 20,354.29 : x
  2. Step 2: Convert to fraction form
    31,683.11/43,705.17 = 20,354.29/x
  3. Step 3: Cross multiply
    31,683.11x = 43,705.17 × 20,354.29
  4. Step 4: Simplify right side
    31,683.11x = 889,587,595.42
  5. Step 5: Solve for x
    x = 889,587,595.42/31,683.11
  6. Step 6: Final answer
    x = 28,077.66

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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.