Home / 13,349.48-18,420.66-7,381.25

Finding the Fourth Proportional to 13,349.48, 18,420.66 and 7,381.25

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Solution

The fourth proportional to 13,349.48, 18,420.66 and 7,381.25 is: 10,185.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,349.48 : 18,420.66 = 7,381.25 : x
  2. Step 2: Convert to fraction form
    13,349.48/18,420.66 = 7,381.25/x
  3. Step 3: Cross multiply
    13,349.48x = 18,420.66 × 7,381.25
  4. Step 4: Simplify right side
    13,349.48x = 135,967,404.52
  5. Step 5: Solve for x
    x = 135,967,404.52/13,349.48
  6. Step 6: Final answer
    x = 10,185.22

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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.