Home / 28,723.40-43,063.92-20,705.31

Finding the Fourth Proportional to 28,723.40, 43,063.92 and 20,705.31

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Solution

The fourth proportional to 28,723.40, 43,063.92 and 20,705.31 is: 31,042.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,723.40 : 43,063.92 = 20,705.31 : x
  2. Step 2: Convert to fraction form
    28,723.40/43,063.92 = 20,705.31/x
  3. Step 3: Cross multiply
    28,723.40x = 43,063.92 × 20,705.31
  4. Step 4: Simplify right side
    28,723.40x = 891,651,813.42
  5. Step 5: Solve for x
    x = 891,651,813.42/28,723.40
  6. Step 6: Final answer
    x = 31,042.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.