Home / 11,358.90-15,672.69-6,640.92

Finding the Fourth Proportional to 11,358.90, 15,672.69 and 6,640.92

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Solution

The fourth proportional to 11,358.90, 15,672.69 and 6,640.92 is: 9,162.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,358.90 : 15,672.69 = 6,640.92 : x
  2. Step 2: Convert to fraction form
    11,358.90/15,672.69 = 6,640.92/x
  3. Step 3: Cross multiply
    11,358.90x = 15,672.69 × 6,640.92
  4. Step 4: Simplify right side
    11,358.90x = 104,081,080.47
  5. Step 5: Solve for x
    x = 104,081,080.47/11,358.90
  6. Step 6: Final answer
    x = 9,162.95

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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.