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Finding the Fourth Proportional to 11,107.80, 15,309.66 and 10,051.80

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Solution

The fourth proportional to 11,107.80, 15,309.66 and 10,051.80 is: 13,854.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,107.80 : 15,309.66 = 10,051.80 : x
  2. Step 2: Convert to fraction form
    11,107.80/15,309.66 = 10,051.80/x
  3. Step 3: Cross multiply
    11,107.80x = 15,309.66 × 10,051.80
  4. Step 4: Simplify right side
    11,107.80x = 153,889,640.39
  5. Step 5: Solve for x
    x = 153,889,640.39/11,107.80
  6. Step 6: Final answer
    x = 13,854.20

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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.