Home / 18,429.39-25,416.90-15,572.07

Finding the Fourth Proportional to 18,429.39, 25,416.90 and 15,572.07

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Solution

The fourth proportional to 18,429.39, 25,416.90 and 15,572.07 is: 21,476.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,429.39 : 25,416.90 = 15,572.07 : x
  2. Step 2: Convert to fraction form
    18,429.39/25,416.90 = 15,572.07/x
  3. Step 3: Cross multiply
    18,429.39x = 25,416.90 × 15,572.07
  4. Step 4: Simplify right side
    18,429.39x = 395,793,745.98
  5. Step 5: Solve for x
    x = 395,793,745.98/18,429.39
  6. Step 6: Final answer
    x = 21,476.23

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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.