Home / 11,925.92-17,871.60-6,720.72

Finding the Fourth Proportional to 11,925.92, 17,871.60 and 6,720.72

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Solution

The fourth proportional to 11,925.92, 17,871.60 and 6,720.72 is: 10,071.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,925.92 : 17,871.60 = 6,720.72 : x
  2. Step 2: Convert to fraction form
    11,925.92/17,871.60 = 6,720.72/x
  3. Step 3: Cross multiply
    11,925.92x = 17,871.60 × 6,720.72
  4. Step 4: Simplify right side
    11,925.92x = 120,110,019.55
  5. Step 5: Solve for x
    x = 120,110,019.55/11,925.92
  6. Step 6: Final answer
    x = 10,071.34

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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.