Home / 13,320.75-18,381.74-7,351.16

Finding the Fourth Proportional to 13,320.75, 18,381.74 and 7,351.16

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Solution

The fourth proportional to 13,320.75, 18,381.74 and 7,351.16 is: 10,144.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.75 : 18,381.74 = 7,351.16 : x
  2. Step 2: Convert to fraction form
    13,320.75/18,381.74 = 7,351.16/x
  3. Step 3: Cross multiply
    13,320.75x = 18,381.74 × 7,351.16
  4. Step 4: Simplify right side
    13,320.75x = 135,126,983.15
  5. Step 5: Solve for x
    x = 135,126,983.15/13,320.75
  6. Step 6: Final answer
    x = 10,144.09

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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.