Home / 13,320.08-18,381.46-7,351.40

Finding the Fourth Proportional to 13,320.08, 18,381.46 and 7,351.40

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Solution

The fourth proportional to 13,320.08, 18,381.46 and 7,351.40 is: 10,144.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.08 : 18,381.46 = 7,351.40 : x
  2. Step 2: Convert to fraction form
    13,320.08/18,381.46 = 7,351.40/x
  3. Step 3: Cross multiply
    13,320.08x = 18,381.46 × 7,351.40
  4. Step 4: Simplify right side
    13,320.08x = 135,129,465.04
  5. Step 5: Solve for x
    x = 135,129,465.04/13,320.08
  6. Step 6: Final answer
    x = 10,144.79

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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.