Home / 28,906.80-43,360.20-21,908.40

Finding the Fourth Proportional to 28,906.80, 43,360.20 and 21,908.40

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Solution

The fourth proportional to 28,906.80, 43,360.20 and 21,908.40 is: 32,862.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,906.80 : 43,360.20 = 21,908.40 : x
  2. Step 2: Convert to fraction form
    28,906.80/43,360.20 = 21,908.40/x
  3. Step 3: Cross multiply
    28,906.80x = 43,360.20 × 21,908.40
  4. Step 4: Simplify right side
    28,906.80x = 949,952,605.68
  5. Step 5: Solve for x
    x = 949,952,605.68/28,906.80
  6. Step 6: Final answer
    x = 32,862.60

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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.