Home / 13,349.48-18,422.14-7,381

Finding the Fourth Proportional to 13,349.48, 18,422.14 and 7,381

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Solution

The fourth proportional to 13,349.48, 18,422.14 and 7,381 is: 10,185.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,349.48 : 18,422.14 = 7,381 : x
  2. Step 2: Convert to fraction form
    13,349.48/18,422.14 = 7,381/x
  3. Step 3: Cross multiply
    13,349.48x = 18,422.14 × 7,381
  4. Step 4: Simplify right side
    13,349.48x = 135,973,815.34
  5. Step 5: Solve for x
    x = 135,973,815.34/13,349.48
  6. Step 6: Final answer
    x = 10,185.70

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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.