Home / 10,511.07-14,511.21-6,979.11

Finding the Fourth Proportional to 10,511.07, 14,511.21 and 6,979.11

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Solution

The fourth proportional to 10,511.07, 14,511.21 and 6,979.11 is: 9,635.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,511.07 : 14,511.21 = 6,979.11 : x
  2. Step 2: Convert to fraction form
    10,511.07/14,511.21 = 6,979.11/x
  3. Step 3: Cross multiply
    10,511.07x = 14,511.21 × 6,979.11
  4. Step 4: Simplify right side
    10,511.07x = 101,275,330.82
  5. Step 5: Solve for x
    x = 101,275,330.82/10,511.07
  6. Step 6: Final answer
    x = 9,635.11

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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.