Home / 19,158.28-28,723.56-12,902.80

Finding the Fourth Proportional to 19,158.28, 28,723.56 and 12,902.80

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Solution

The fourth proportional to 19,158.28, 28,723.56 and 12,902.80 is: 19,344.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,158.28 : 28,723.56 = 12,902.80 : x
  2. Step 2: Convert to fraction form
    19,158.28/28,723.56 = 12,902.80/x
  3. Step 3: Cross multiply
    19,158.28x = 28,723.56 × 12,902.80
  4. Step 4: Simplify right side
    19,158.28x = 370,614,349.97
  5. Step 5: Solve for x
    x = 370,614,349.97/19,158.28
  6. Step 6: Final answer
    x = 19,344.87

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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.