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Finding the Fourth Proportional to 9,365.40, 13,942.08 and 9,316.44

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Solution

The fourth proportional to 9,365.40, 13,942.08 and 9,316.44 is: 13,869.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,365.40 : 13,942.08 = 9,316.44 : x
  2. Step 2: Convert to fraction form
    9,365.40/13,942.08 = 9,316.44/x
  3. Step 3: Cross multiply
    9,365.40x = 13,942.08 × 9,316.44
  4. Step 4: Simplify right side
    9,365.40x = 129,890,551.80
  5. Step 5: Solve for x
    x = 129,890,551.80/9,365.40
  6. Step 6: Final answer
    x = 13,869.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.