Home / 18,404.50-25,396.66-11,139.32

Finding the Fourth Proportional to 18,404.50, 25,396.66 and 11,139.32

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Solution

The fourth proportional to 18,404.50, 25,396.66 and 11,139.32 is: 15,371.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,404.50 : 25,396.66 = 11,139.32 : x
  2. Step 2: Convert to fraction form
    18,404.50/25,396.66 = 11,139.32/x
  3. Step 3: Cross multiply
    18,404.50x = 25,396.66 × 11,139.32
  4. Step 4: Simplify right side
    18,404.50x = 282,901,522.67
  5. Step 5: Solve for x
    x = 282,901,522.67/18,404.50
  6. Step 6: Final answer
    x = 15,371.32

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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.