Home / 13,860.45-19,125.50-7,891.83

Finding the Fourth Proportional to 13,860.45, 19,125.50 and 7,891.83

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Solution

The fourth proportional to 13,860.45, 19,125.50 and 7,891.83 is: 10,889.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,860.45 : 19,125.50 = 7,891.83 : x
  2. Step 2: Convert to fraction form
    13,860.45/19,125.50 = 7,891.83/x
  3. Step 3: Cross multiply
    13,860.45x = 19,125.50 × 7,891.83
  4. Step 4: Simplify right side
    13,860.45x = 150,935,155.21
  5. Step 5: Solve for x
    x = 150,935,155.21/13,860.45
  6. Step 6: Final answer
    x = 10,889.63

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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.