Home / 13,926.20-19,217.94-7,638.80

Finding the Fourth Proportional to 13,926.20, 19,217.94 and 7,638.80

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Solution

The fourth proportional to 13,926.20, 19,217.94 and 7,638.80 is: 10,541.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,926.20 : 19,217.94 = 7,638.80 : x
  2. Step 2: Convert to fraction form
    13,926.20/19,217.94 = 7,638.80/x
  3. Step 3: Cross multiply
    13,926.20x = 19,217.94 × 7,638.80
  4. Step 4: Simplify right side
    13,926.20x = 146,802,000.07
  5. Step 5: Solve for x
    x = 146,802,000.07/13,926.20
  6. Step 6: Final answer
    x = 10,541.43

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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.