Home / 13,349.90-18,422.15-7,381.23

Finding the Fourth Proportional to 13,349.90, 18,422.15 and 7,381.23

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Solution

The fourth proportional to 13,349.90, 18,422.15 and 7,381.23 is: 10,185.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,349.90 : 18,422.15 = 7,381.23 : x
  2. Step 2: Convert to fraction form
    13,349.90/18,422.15 = 7,381.23/x
  3. Step 3: Cross multiply
    13,349.90x = 18,422.15 × 7,381.23
  4. Step 4: Simplify right side
    13,349.90x = 135,978,089.34
  5. Step 5: Solve for x
    x = 135,978,089.34/13,349.90
  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.