Home / 28,713.84-43,079.40-13,930.80

Finding the Fourth Proportional to 28,713.84, 43,079.40 and 13,930.80

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Solution

The fourth proportional to 28,713.84, 43,079.40 and 13,930.80 is: 20,900.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,713.84 : 43,079.40 = 13,930.80 : x
  2. Step 2: Convert to fraction form
    28,713.84/43,079.40 = 13,930.80/x
  3. Step 3: Cross multiply
    28,713.84x = 43,079.40 × 13,930.80
  4. Step 4: Simplify right side
    28,713.84x = 600,130,505.52
  5. Step 5: Solve for x
    x = 600,130,505.52/28,713.84
  6. Step 6: Final answer
    x = 20,900.39

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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.