Home / 20,210.24-27,890.99-11,257.75

Finding the Fourth Proportional to 20,210.24, 27,890.99 and 11,257.75

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Solution

The fourth proportional to 20,210.24, 27,890.99 and 11,257.75 is: 15,536.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210.24 : 27,890.99 = 11,257.75 : x
  2. Step 2: Convert to fraction form
    20,210.24/27,890.99 = 11,257.75/x
  3. Step 3: Cross multiply
    20,210.24x = 27,890.99 × 11,257.75
  4. Step 4: Simplify right side
    20,210.24x = 313,989,792.67
  5. Step 5: Solve for x
    x = 313,989,792.67/20,210.24
  6. Step 6: Final answer
    x = 15,536.17

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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.