Home / 28,876.28-43,314.42-21,028.72

Finding the Fourth Proportional to 28,876.28, 43,314.42 and 21,028.72

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Solution

The fourth proportional to 28,876.28, 43,314.42 and 21,028.72 is: 31,543.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,876.28 : 43,314.42 = 21,028.72 : x
  2. Step 2: Convert to fraction form
    28,876.28/43,314.42 = 21,028.72/x
  3. Step 3: Cross multiply
    28,876.28x = 43,314.42 × 21,028.72
  4. Step 4: Simplify right side
    28,876.28x = 910,846,810.14
  5. Step 5: Solve for x
    x = 910,846,810.14/28,876.28
  6. Step 6: Final answer
    x = 31,543.08

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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.