Home / 13,746.72-20,618.96-3,885.76

Finding the Fourth Proportional to 13,746.72, 20,618.96 and 3,885.76

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Solution

The fourth proportional to 13,746.72, 20,618.96 and 3,885.76 is: 5,828.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,746.72 : 20,618.96 = 3,885.76 : x
  2. Step 2: Convert to fraction form
    13,746.72/20,618.96 = 3,885.76/x
  3. Step 3: Cross multiply
    13,746.72x = 20,618.96 × 3,885.76
  4. Step 4: Simplify right side
    13,746.72x = 80,120,330.01
  5. Step 5: Solve for x
    x = 80,120,330.01/13,746.72
  6. Step 6: Final answer
    x = 5,828.32

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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.