Home / 18,811.32-25,952.85-13,155.09

Finding the Fourth Proportional to 18,811.32, 25,952.85 and 13,155.09

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Solution

The fourth proportional to 18,811.32, 25,952.85 and 13,155.09 is: 18,149.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,811.32 : 25,952.85 = 13,155.09 : x
  2. Step 2: Convert to fraction form
    18,811.32/25,952.85 = 13,155.09/x
  3. Step 3: Cross multiply
    18,811.32x = 25,952.85 × 13,155.09
  4. Step 4: Simplify right side
    18,811.32x = 341,412,077.51
  5. Step 5: Solve for x
    x = 341,412,077.51/18,811.32
  6. Step 6: Final answer
    x = 18,149.29

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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.