Home / 13,695.72-20,543.70-3,307.56

Finding the Fourth Proportional to 13,695.72, 20,543.70 and 3,307.56

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Solution

The fourth proportional to 13,695.72, 20,543.70 and 3,307.56 is: 4,961.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,695.72 : 20,543.70 = 3,307.56 : x
  2. Step 2: Convert to fraction form
    13,695.72/20,543.70 = 3,307.56/x
  3. Step 3: Cross multiply
    13,695.72x = 20,543.70 × 3,307.56
  4. Step 4: Simplify right side
    13,695.72x = 67,949,520.37
  5. Step 5: Solve for x
    x = 67,949,520.37/13,695.72
  6. Step 6: Final answer
    x = 4,961.37

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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.