Home / 13,695.88-20,543.81-3,307.63

Finding the Fourth Proportional to 13,695.88, 20,543.81 and 3,307.63

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Solution

The fourth proportional to 13,695.88, 20,543.81 and 3,307.63 is: 4,961.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,695.88 : 20,543.81 = 3,307.63 : x
  2. Step 2: Convert to fraction form
    13,695.88/20,543.81 = 3,307.63/x
  3. Step 3: Cross multiply
    13,695.88x = 20,543.81 × 3,307.63
  4. Step 4: Simplify right side
    13,695.88x = 67,951,279.18
  5. Step 5: Solve for x
    x = 67,951,279.18/13,695.88
  6. Step 6: Final answer
    x = 4,961.44

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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.