Home / 13,873.11-19,140.21-7,900.56

Finding the Fourth Proportional to 13,873.11, 19,140.21 and 7,900.56

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Solution

The fourth proportional to 13,873.11, 19,140.21 and 7,900.56 is: 10,900.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,873.11 : 19,140.21 = 7,900.56 : x
  2. Step 2: Convert to fraction form
    13,873.11/19,140.21 = 7,900.56/x
  3. Step 3: Cross multiply
    13,873.11x = 19,140.21 × 7,900.56
  4. Step 4: Simplify right side
    13,873.11x = 151,218,377.52
  5. Step 5: Solve for x
    x = 151,218,377.52/13,873.11
  6. Step 6: Final answer
    x = 10,900.11

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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.