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Finding the Fourth Proportional to 11,356.54, 15,687.02 and 9,474.34

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Solution

The fourth proportional to 11,356.54, 15,687.02 and 9,474.34 is: 13,087.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,356.54 : 15,687.02 = 9,474.34 : x
  2. Step 2: Convert to fraction form
    11,356.54/15,687.02 = 9,474.34/x
  3. Step 3: Cross multiply
    11,356.54x = 15,687.02 × 9,474.34
  4. Step 4: Simplify right side
    11,356.54x = 148,624,161.07
  5. Step 5: Solve for x
    x = 148,624,161.07/11,356.54
  6. Step 6: Final answer
    x = 13,087.10

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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.