Home / 14,143.83-21,215.75-3,613.88

Finding the Fourth Proportional to 14,143.83, 21,215.75 and 3,613.88

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Solution

The fourth proportional to 14,143.83, 21,215.75 and 3,613.88 is: 5,420.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,143.83 : 21,215.75 = 3,613.88 : x
  2. Step 2: Convert to fraction form
    14,143.83/21,215.75 = 3,613.88/x
  3. Step 3: Cross multiply
    14,143.83x = 21,215.75 × 3,613.88
  4. Step 4: Simplify right side
    14,143.83x = 76,671,059.50
  5. Step 5: Solve for x
    x = 76,671,059.50/14,143.83
  6. Step 6: Final answer
    x = 5,420.81

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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.