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Finding the Fourth Proportional to 13,400.65, 18,493.88 and 7,433.45

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Solution

The fourth proportional to 13,400.65, 18,493.88 and 7,433.45 is: 10,258.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,400.65 : 18,493.88 = 7,433.45 : x
  2. Step 2: Convert to fraction form
    13,400.65/18,493.88 = 7,433.45/x
  3. Step 3: Cross multiply
    13,400.65x = 18,493.88 × 7,433.45
  4. Step 4: Simplify right side
    13,400.65x = 137,473,202.65
  5. Step 5: Solve for x
    x = 137,473,202.65/13,400.65
  6. Step 6: Final answer
    x = 10,258.70

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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.