Home / 13,370.35-18,451.30-7,320.49

Finding the Fourth Proportional to 13,370.35, 18,451.30 and 7,320.49

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Solution

The fourth proportional to 13,370.35, 18,451.30 and 7,320.49 is: 10,102.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,370.35 : 18,451.30 = 7,320.49 : x
  2. Step 2: Convert to fraction form
    13,370.35/18,451.30 = 7,320.49/x
  3. Step 3: Cross multiply
    13,370.35x = 18,451.30 × 7,320.49
  4. Step 4: Simplify right side
    13,370.35x = 135,072,557.14
  5. Step 5: Solve for x
    x = 135,072,557.14/13,370.35
  6. Step 6: Final answer
    x = 10,102.40

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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.