Home / 28,711.84-43,076.40-13,928.80

Finding the Fourth Proportional to 28,711.84, 43,076.40 and 13,928.80

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Solution

The fourth proportional to 28,711.84, 43,076.40 and 13,928.80 is: 20,897.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,711.84 : 43,076.40 = 13,928.80 : x
  2. Step 2: Convert to fraction form
    28,711.84/43,076.40 = 13,928.80/x
  3. Step 3: Cross multiply
    28,711.84x = 43,076.40 × 13,928.80
  4. Step 4: Simplify right side
    28,711.84x = 600,002,560.32
  5. Step 5: Solve for x
    x = 600,002,560.32/28,711.84
  6. Step 6: Final answer
    x = 20,897.39

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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.