Home / 13,926.28-19,217.90-7,638.26

Finding the Fourth Proportional to 13,926.28, 19,217.90 and 7,638.26

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Solution

The fourth proportional to 13,926.28, 19,217.90 and 7,638.26 is: 10,540.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,926.28 : 19,217.90 = 7,638.26 : x
  2. Step 2: Convert to fraction form
    13,926.28/19,217.90 = 7,638.26/x
  3. Step 3: Cross multiply
    13,926.28x = 19,217.90 × 7,638.26
  4. Step 4: Simplify right side
    13,926.28x = 146,791,316.85
  5. Step 5: Solve for x
    x = 146,791,316.85/13,926.28
  6. Step 6: Final answer
    x = 10,540.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.