Home / 13,320.03-18,381.53-7,351.75

Finding the Fourth Proportional to 13,320.03, 18,381.53 and 7,351.75

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Solution

The fourth proportional to 13,320.03, 18,381.53 and 7,351.75 is: 10,145.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.03 : 18,381.53 = 7,351.75 : x
  2. Step 2: Convert to fraction form
    13,320.03/18,381.53 = 7,351.75/x
  3. Step 3: Cross multiply
    13,320.03x = 18,381.53 × 7,351.75
  4. Step 4: Simplify right side
    13,320.03x = 135,136,413.18
  5. Step 5: Solve for x
    x = 135,136,413.18/13,320.03
  6. Step 6: Final answer
    x = 10,145.35

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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.