Home / 20,657.43-28,508.49-11,705.31

Finding the Fourth Proportional to 20,657.43, 28,508.49 and 11,705.31

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Solution

The fourth proportional to 20,657.43, 28,508.49 and 11,705.31 is: 16,154.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,657.43 : 28,508.49 = 11,705.31 : x
  2. Step 2: Convert to fraction form
    20,657.43/28,508.49 = 11,705.31/x
  3. Step 3: Cross multiply
    20,657.43x = 28,508.49 × 11,705.31
  4. Step 4: Simplify right side
    20,657.43x = 333,700,713.08
  5. Step 5: Solve for x
    x = 333,700,713.08/20,657.43
  6. Step 6: Final answer
    x = 16,154.03

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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.