Home / 13,859.20-19,126.14-7,571.58

Finding the Fourth Proportional to 13,859.20, 19,126.14 and 7,571.58

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Solution

The fourth proportional to 13,859.20, 19,126.14 and 7,571.58 is: 10,449.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,859.20 : 19,126.14 = 7,571.58 : x
  2. Step 2: Convert to fraction form
    13,859.20/19,126.14 = 7,571.58/x
  3. Step 3: Cross multiply
    13,859.20x = 19,126.14 × 7,571.58
  4. Step 4: Simplify right side
    13,859.20x = 144,815,099.10
  5. Step 5: Solve for x
    x = 144,815,099.10/13,859.20
  6. Step 6: Final answer
    x = 10,449.02

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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.