Home / 13,306.50-19,959.75-5,515.56

Finding the Fourth Proportional to 13,306.50, 19,959.75 and 5,515.56

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Solution

The fourth proportional to 13,306.50, 19,959.75 and 5,515.56 is: 8,273.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,306.50 : 19,959.75 = 5,515.56 : x
  2. Step 2: Convert to fraction form
    13,306.50/19,959.75 = 5,515.56/x
  3. Step 3: Cross multiply
    13,306.50x = 19,959.75 × 5,515.56
  4. Step 4: Simplify right side
    13,306.50x = 110,089,198.71
  5. Step 5: Solve for x
    x = 110,089,198.71/13,306.50
  6. Step 6: Final answer
    x = 8,273.34

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Double scale
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Similar ratio
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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.