Home / 9,820.66-13,556.46-6,678.76

Finding the Fourth Proportional to 9,820.66, 13,556.46 and 6,678.76

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Solution

The fourth proportional to 9,820.66, 13,556.46 and 6,678.76 is: 9,219.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,820.66 : 13,556.46 = 6,678.76 : x
  2. Step 2: Convert to fraction form
    9,820.66/13,556.46 = 6,678.76/x
  3. Step 3: Cross multiply
    9,820.66x = 13,556.46 × 6,678.76
  4. Step 4: Simplify right side
    9,820.66x = 90,540,342.79
  5. Step 5: Solve for x
    x = 90,540,342.79/9,820.66
  6. Step 6: Final answer
    x = 9,219.37

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Half scale
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Double scale
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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.