Home / 28,780.32-39,717.36-16,205.52

Finding the Fourth Proportional to 28,780.32, 39,717.36 and 16,205.52

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Solution

The fourth proportional to 28,780.32, 39,717.36 and 16,205.52 is: 22,363.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,780.32 : 39,717.36 = 16,205.52 : x
  2. Step 2: Convert to fraction form
    28,780.32/39,717.36 = 16,205.52/x
  3. Step 3: Cross multiply
    28,780.32x = 39,717.36 × 16,205.52
  4. Step 4: Simplify right side
    28,780.32x = 643,640,471.83
  5. Step 5: Solve for x
    x = 643,640,471.83/28,780.32
  6. Step 6: Final answer
    x = 22,363.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.