Home / 13,396.39-18,486.98-7,427.90

Finding the Fourth Proportional to 13,396.39, 18,486.98 and 7,427.90

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Solution

The fourth proportional to 13,396.39, 18,486.98 and 7,427.90 is: 10,250.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,396.39 : 18,486.98 = 7,427.90 : x
  2. Step 2: Convert to fraction form
    13,396.39/18,486.98 = 7,427.90/x
  3. Step 3: Cross multiply
    13,396.39x = 18,486.98 × 7,427.90
  4. Step 4: Simplify right side
    13,396.39x = 137,319,517.46
  5. Step 5: Solve for x
    x = 137,319,517.46/13,396.39
  6. Step 6: Final answer
    x = 10,250.49

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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.