Home / 28,816.40-39,770.05-16,071.66

Finding the Fourth Proportional to 28,816.40, 39,770.05 and 16,071.66

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Solution

The fourth proportional to 28,816.40, 39,770.05 and 16,071.66 is: 22,180.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,816.40 : 39,770.05 = 16,071.66 : x
  2. Step 2: Convert to fraction form
    28,816.40/39,770.05 = 16,071.66/x
  3. Step 3: Cross multiply
    28,816.40x = 39,770.05 × 16,071.66
  4. Step 4: Simplify right side
    28,816.40x = 639,170,721.78
  5. Step 5: Solve for x
    x = 639,170,721.78/28,816.40
  6. Step 6: Final answer
    x = 22,180.80

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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.