Home / 13,349.84-18,422.12-7,381.36

Finding the Fourth Proportional to 13,349.84, 18,422.12 and 7,381.36

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Solution

The fourth proportional to 13,349.84, 18,422.12 and 7,381.36 is: 10,185.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,349.84 : 18,422.12 = 7,381.36 : x
  2. Step 2: Convert to fraction form
    13,349.84/18,422.12 = 7,381.36/x
  3. Step 3: Cross multiply
    13,349.84x = 18,422.12 × 7,381.36
  4. Step 4: Simplify right side
    13,349.84x = 135,980,299.68
  5. Step 5: Solve for x
    x = 135,980,299.68/13,349.84
  6. Step 6: Final answer
    x = 10,185.91

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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.