Home / 13,894.20-19,173.87-7,520.79

Finding the Fourth Proportional to 13,894.20, 19,173.87 and 7,520.79

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Solution

The fourth proportional to 13,894.20, 19,173.87 and 7,520.79 is: 10,378.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,894.20 : 19,173.87 = 7,520.79 : x
  2. Step 2: Convert to fraction form
    13,894.20/19,173.87 = 7,520.79/x
  3. Step 3: Cross multiply
    13,894.20x = 19,173.87 × 7,520.79
  4. Step 4: Simplify right side
    13,894.20x = 144,202,649.76
  5. Step 5: Solve for x
    x = 144,202,649.76/13,894.20
  6. Step 6: Final answer
    x = 10,378.62

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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.