Home / 28,877.15-43,315.68-21,029.57

Finding the Fourth Proportional to 28,877.15, 43,315.68 and 21,029.57

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Solution

The fourth proportional to 28,877.15, 43,315.68 and 21,029.57 is: 31,544.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,877.15 : 43,315.68 = 21,029.57 : x
  2. Step 2: Convert to fraction form
    28,877.15/43,315.68 = 21,029.57/x
  3. Step 3: Cross multiply
    28,877.15x = 43,315.68 × 21,029.57
  4. Step 4: Simplify right side
    28,877.15x = 910,910,124.66
  5. Step 5: Solve for x
    x = 910,910,124.66/28,877.15
  6. Step 6: Final answer
    x = 31,544.32

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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.