Home / 13,213.91-19,820.90-4,454.98

Finding the Fourth Proportional to 13,213.91, 19,820.90 and 4,454.98

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Solution

The fourth proportional to 13,213.91, 19,820.90 and 4,454.98 is: 6,682.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,213.91 : 19,820.90 = 4,454.98 : x
  2. Step 2: Convert to fraction form
    13,213.91/19,820.90 = 4,454.98/x
  3. Step 3: Cross multiply
    13,213.91x = 19,820.90 × 4,454.98
  4. Step 4: Simplify right side
    13,213.91x = 88,301,713.08
  5. Step 5: Solve for x
    x = 88,301,713.08/13,213.91
  6. Step 6: Final answer
    x = 6,682.48

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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.