Home / 28,876.15-43,314.18-21,028.57

Finding the Fourth Proportional to 28,876.15, 43,314.18 and 21,028.57

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Solution

The fourth proportional to 28,876.15, 43,314.18 and 21,028.57 is: 31,542.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,876.15 : 43,314.18 = 21,028.57 : x
  2. Step 2: Convert to fraction form
    28,876.15/43,314.18 = 21,028.57/x
  3. Step 3: Cross multiply
    28,876.15x = 43,314.18 × 21,028.57
  4. Step 4: Simplify right side
    28,876.15x = 910,835,266.12
  5. Step 5: Solve for x
    x = 910,835,266.12/28,876.15
  6. Step 6: Final answer
    x = 31,542.82

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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.