Home / 28,614.12-42,928.80-11,968.56

Finding the Fourth Proportional to 28,614.12, 42,928.80 and 11,968.56

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Solution

The fourth proportional to 28,614.12, 42,928.80 and 11,968.56 is: 17,956.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,614.12 : 42,928.80 = 11,968.56 : x
  2. Step 2: Convert to fraction form
    28,614.12/42,928.80 = 11,968.56/x
  3. Step 3: Cross multiply
    28,614.12x = 42,928.80 × 11,968.56
  4. Step 4: Simplify right side
    28,614.12x = 513,795,918.53
  5. Step 5: Solve for x
    x = 513,795,918.53/28,614.12
  6. Step 6: Final answer
    x = 17,956.03

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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.