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Finding the Fourth Proportional to 11,552.40, 15,994.80 and 10,969.20

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Solution

The fourth proportional to 11,552.40, 15,994.80 and 10,969.20 is: 15,187.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,552.40 : 15,994.80 = 10,969.20 : x
  2. Step 2: Convert to fraction form
    11,552.40/15,994.80 = 10,969.20/x
  3. Step 3: Cross multiply
    11,552.40x = 15,994.80 × 10,969.20
  4. Step 4: Simplify right side
    11,552.40x = 175,450,160.16
  5. Step 5: Solve for x
    x = 175,450,160.16/11,552.40
  6. Step 6: Final answer
    x = 15,187.33

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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.