Home / 28,990.68-43,486.98-21,117.24

Finding the Fourth Proportional to 28,990.68, 43,486.98 and 21,117.24

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Solution

The fourth proportional to 28,990.68, 43,486.98 and 21,117.24 is: 31,676.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,990.68 : 43,486.98 = 21,117.24 : x
  2. Step 2: Convert to fraction form
    28,990.68/43,486.98 = 21,117.24/x
  3. Step 3: Cross multiply
    28,990.68x = 43,486.98 × 21,117.24
  4. Step 4: Simplify right side
    28,990.68x = 918,324,993.54
  5. Step 5: Solve for x
    x = 918,324,993.54/28,990.68
  6. Step 6: Final answer
    x = 31,676.56

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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.