Home / 28,190.13-42,266.81-9,212.43

Finding the Fourth Proportional to 28,190.13, 42,266.81 and 9,212.43

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Solution

The fourth proportional to 28,190.13, 42,266.81 and 9,212.43 is: 13,812.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,190.13 : 42,266.81 = 9,212.43 : x
  2. Step 2: Convert to fraction form
    28,190.13/42,266.81 = 9,212.43/x
  3. Step 3: Cross multiply
    28,190.13x = 42,266.81 × 9,212.43
  4. Step 4: Simplify right side
    28,190.13x = 389,380,209.98
  5. Step 5: Solve for x
    x = 389,380,209.98/28,190.13
  6. Step 6: Final answer
    x = 13,812.65

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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.