Home / 13,635.28-20,449.86-5,312.44

Finding the Fourth Proportional to 13,635.28, 20,449.86 and 5,312.44

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Solution

The fourth proportional to 13,635.28, 20,449.86 and 5,312.44 is: 7,967.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,635.28 : 20,449.86 = 5,312.44 : x
  2. Step 2: Convert to fraction form
    13,635.28/20,449.86 = 5,312.44/x
  3. Step 3: Cross multiply
    13,635.28x = 20,449.86 × 5,312.44
  4. Step 4: Simplify right side
    13,635.28x = 108,638,654.26
  5. Step 5: Solve for x
    x = 108,638,654.26/13,635.28
  6. Step 6: Final answer
    x = 7,967.47

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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.