Home / 28,381.40-39,166.33-16,451.66

Finding the Fourth Proportional to 28,381.40, 39,166.33 and 16,451.66

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Solution

The fourth proportional to 28,381.40, 39,166.33 and 16,451.66 is: 22,703.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,381.40 : 39,166.33 = 16,451.66 : x
  2. Step 2: Convert to fraction form
    28,381.40/39,166.33 = 16,451.66/x
  3. Step 3: Cross multiply
    28,381.40x = 39,166.33 × 16,451.66
  4. Step 4: Simplify right side
    28,381.40x = 644,350,907.65
  5. Step 5: Solve for x
    x = 644,350,907.65/28,381.40
  6. Step 6: Final answer
    x = 22,703.29

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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.