Home / 11,455.46-15,808.51-6,979.21

Finding the Fourth Proportional to 11,455.46, 15,808.51 and 6,979.21

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Solution

The fourth proportional to 11,455.46, 15,808.51 and 6,979.21 is: 9,631.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,455.46 : 15,808.51 = 6,979.21 : x
  2. Step 2: Convert to fraction form
    11,455.46/15,808.51 = 6,979.21/x
  3. Step 3: Cross multiply
    11,455.46x = 15,808.51 × 6,979.21
  4. Step 4: Simplify right side
    11,455.46x = 110,330,911.08
  5. Step 5: Solve for x
    x = 110,330,911.08/11,455.46
  6. Step 6: Final answer
    x = 9,631.29

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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.