Home / 20,210.70-27,888.26-11,257.57

Finding the Fourth Proportional to 20,210.70, 27,888.26 and 11,257.57

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Solution

The fourth proportional to 20,210.70, 27,888.26 and 11,257.57 is: 15,534.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210.70 : 27,888.26 = 11,257.57 : x
  2. Step 2: Convert to fraction form
    20,210.70/27,888.26 = 11,257.57/x
  3. Step 3: Cross multiply
    20,210.70x = 27,888.26 × 11,257.57
  4. Step 4: Simplify right side
    20,210.70x = 313,954,039.13
  5. Step 5: Solve for x
    x = 313,954,039.13/20,210.70
  6. Step 6: Final answer
    x = 15,534.05

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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.