Home / 9,515.99-13,131.90-5,266.71

Finding the Fourth Proportional to 9,515.99, 13,131.90 and 5,266.71

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Solution

The fourth proportional to 9,515.99, 13,131.90 and 5,266.71 is: 7,267.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,515.99 : 13,131.90 = 5,266.71 : x
  2. Step 2: Convert to fraction form
    9,515.99/13,131.90 = 5,266.71/x
  3. Step 3: Cross multiply
    9,515.99x = 13,131.90 × 5,266.71
  4. Step 4: Simplify right side
    9,515.99x = 69,161,909.05
  5. Step 5: Solve for x
    x = 69,161,909.05/9,515.99
  6. Step 6: Final answer
    x = 7,267.97

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.