Home / 11,391.63-15,721.05-6,677.43

Finding the Fourth Proportional to 11,391.63, 15,721.05 and 6,677.43

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Solution

The fourth proportional to 11,391.63, 15,721.05 and 6,677.43 is: 9,215.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,391.63 : 15,721.05 = 6,677.43 : x
  2. Step 2: Convert to fraction form
    11,391.63/15,721.05 = 6,677.43/x
  3. Step 3: Cross multiply
    11,391.63x = 15,721.05 × 6,677.43
  4. Step 4: Simplify right side
    11,391.63x = 104,976,210.90
  5. Step 5: Solve for x
    x = 104,976,210.90/11,391.63
  6. Step 6: Final answer
    x = 9,215.21

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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.