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Finding the Fourth Proportional to 9,955.50, 13,737.69 and 5,479.44

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Solution

The fourth proportional to 9,955.50, 13,737.69 and 5,479.44 is: 7,561.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,955.50 : 13,737.69 = 5,479.44 : x
  2. Step 2: Convert to fraction form
    9,955.50/13,737.69 = 5,479.44/x
  3. Step 3: Cross multiply
    9,955.50x = 13,737.69 × 5,479.44
  4. Step 4: Simplify right side
    9,955.50x = 75,274,848.09
  5. Step 5: Solve for x
    x = 75,274,848.09/9,955.50
  6. Step 6: Final answer
    x = 7,561.13

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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.