Home / 9,720.48-13,402.56-6,738.88

Finding the Fourth Proportional to 9,720.48, 13,402.56 and 6,738.88

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Solution

The fourth proportional to 9,720.48, 13,402.56 and 6,738.88 is: 9,291.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,720.48 : 13,402.56 = 6,738.88 : x
  2. Step 2: Convert to fraction form
    9,720.48/13,402.56 = 6,738.88/x
  3. Step 3: Cross multiply
    9,720.48x = 13,402.56 × 6,738.88
  4. Step 4: Simplify right side
    9,720.48x = 90,318,243.53
  5. Step 5: Solve for x
    x = 90,318,243.53/9,720.48
  6. Step 6: Final answer
    x = 9,291.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.