Home / 18,429.08-25,409.40-15,591.56

Finding the Fourth Proportional to 18,429.08, 25,409.40 and 15,591.56

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Solution

The fourth proportional to 18,429.08, 25,409.40 and 15,591.56 is: 21,497.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,429.08 : 25,409.40 = 15,591.56 : x
  2. Step 2: Convert to fraction form
    18,429.08/25,409.40 = 15,591.56/x
  3. Step 3: Cross multiply
    18,429.08x = 25,409.40 × 15,591.56
  4. Step 4: Simplify right side
    18,429.08x = 396,172,184.66
  5. Step 5: Solve for x
    x = 396,172,184.66/18,429.08
  6. Step 6: Final answer
    x = 21,497.12

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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.