Home / 9,428.76-13,015.62-6,742.80

Finding the Fourth Proportional to 9,428.76, 13,015.62 and 6,742.80

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Solution

The fourth proportional to 9,428.76, 13,015.62 and 6,742.80 is: 9,307.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,428.76 : 13,015.62 = 6,742.80 : x
  2. Step 2: Convert to fraction form
    9,428.76/13,015.62 = 6,742.80/x
  3. Step 3: Cross multiply
    9,428.76x = 13,015.62 × 6,742.80
  4. Step 4: Simplify right side
    9,428.76x = 87,761,722.54
  5. Step 5: Solve for x
    x = 87,761,722.54/9,428.76
  6. Step 6: Final answer
    x = 9,307.88

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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.