Home / 13,586.56-20,376.96-4,355.20

Finding the Fourth Proportional to 13,586.56, 20,376.96 and 4,355.20

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Solution

The fourth proportional to 13,586.56, 20,376.96 and 4,355.20 is: 6,531.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,586.56 : 20,376.96 = 4,355.20 : x
  2. Step 2: Convert to fraction form
    13,586.56/20,376.96 = 4,355.20/x
  3. Step 3: Cross multiply
    13,586.56x = 20,376.96 × 4,355.20
  4. Step 4: Simplify right side
    13,586.56x = 88,745,736.19
  5. Step 5: Solve for x
    x = 88,745,736.19/13,586.56
  6. Step 6: Final answer
    x = 6,531.88

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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.