Home / 28,628.87-39,508.25-21,446.06

Finding the Fourth Proportional to 28,628.87, 39,508.25 and 21,446.06

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Solution

The fourth proportional to 28,628.87, 39,508.25 and 21,446.06 is: 29,595.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,628.87 : 39,508.25 = 21,446.06 : x
  2. Step 2: Convert to fraction form
    28,628.87/39,508.25 = 21,446.06/x
  3. Step 3: Cross multiply
    28,628.87x = 39,508.25 × 21,446.06
  4. Step 4: Simplify right side
    28,628.87x = 847,295,995.22
  5. Step 5: Solve for x
    x = 847,295,995.22/28,628.87
  6. Step 6: Final answer
    x = 29,595.86

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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.