Home / 28,377.58-39,165.73-21,650.50

Finding the Fourth Proportional to 28,377.58, 39,165.73 and 21,650.50

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Solution

The fourth proportional to 28,377.58, 39,165.73 and 21,650.50 is: 29,881.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,377.58 : 39,165.73 = 21,650.50 : x
  2. Step 2: Convert to fraction form
    28,377.58/39,165.73 = 21,650.50/x
  3. Step 3: Cross multiply
    28,377.58x = 39,165.73 × 21,650.50
  4. Step 4: Simplify right side
    28,377.58x = 847,957,441.54
  5. Step 5: Solve for x
    x = 847,957,441.54/28,377.58
  6. Step 6: Final answer
    x = 29,881.25

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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.