Home / 9,827.05-13,556.91-6,639.30

Finding the Fourth Proportional to 9,827.05, 13,556.91 and 6,639.30

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Solution

The fourth proportional to 9,827.05, 13,556.91 and 6,639.30 is: 9,159.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,827.05 : 13,556.91 = 6,639.30 : x
  2. Step 2: Convert to fraction form
    9,827.05/13,556.91 = 6,639.30/x
  3. Step 3: Cross multiply
    9,827.05x = 13,556.91 × 6,639.30
  4. Step 4: Simplify right side
    9,827.05x = 90,008,324.78
  5. Step 5: Solve for x
    x = 90,008,324.78/9,827.05
  6. Step 6: Final answer
    x = 9,159.24

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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.