Home / 13,995.90-19,313.72-8,331.18

Finding the Fourth Proportional to 13,995.90, 19,313.72 and 8,331.18

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Solution

The fourth proportional to 13,995.90, 19,313.72 and 8,331.18 is: 11,496.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,995.90 : 19,313.72 = 8,331.18 : x
  2. Step 2: Convert to fraction form
    13,995.90/19,313.72 = 8,331.18/x
  3. Step 3: Cross multiply
    13,995.90x = 19,313.72 × 8,331.18
  4. Step 4: Simplify right side
    13,995.90x = 160,906,077.79
  5. Step 5: Solve for x
    x = 160,906,077.79/13,995.90
  6. Step 6: Final answer
    x = 11,496.66

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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.