Home / 10,656.20-15,982.90-3,261.40

Finding the Fourth Proportional to 10,656.20, 15,982.90 and 3,261.40

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Solution

The fourth proportional to 10,656.20, 15,982.90 and 3,261.40 is: 4,891.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,656.20 : 15,982.90 = 3,261.40 : x
  2. Step 2: Convert to fraction form
    10,656.20/15,982.90 = 3,261.40/x
  3. Step 3: Cross multiply
    10,656.20x = 15,982.90 × 3,261.40
  4. Step 4: Simplify right side
    10,656.20x = 52,126,630.06
  5. Step 5: Solve for x
    x = 52,126,630.06/10,656.20
  6. Step 6: Final answer
    x = 4,891.67

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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.