Home / 13,454.07-20,186.88-7,212.30

Finding the Fourth Proportional to 13,454.07, 20,186.88 and 7,212.30

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Solution

The fourth proportional to 13,454.07, 20,186.88 and 7,212.30 is: 10,821.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,454.07 : 20,186.88 = 7,212.30 : x
  2. Step 2: Convert to fraction form
    13,454.07/20,186.88 = 7,212.30/x
  3. Step 3: Cross multiply
    13,454.07x = 20,186.88 × 7,212.30
  4. Step 4: Simplify right side
    13,454.07x = 145,593,834.62
  5. Step 5: Solve for x
    x = 145,593,834.62/13,454.07
  6. Step 6: Final answer
    x = 10,821.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.