Home / 20,203.74-27,880.53-11,251.05

Finding the Fourth Proportional to 20,203.74, 27,880.53 and 11,251.05

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Solution

The fourth proportional to 20,203.74, 27,880.53 and 11,251.05 is: 15,526.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,203.74 : 27,880.53 = 11,251.05 : x
  2. Step 2: Convert to fraction form
    20,203.74/27,880.53 = 11,251.05/x
  3. Step 3: Cross multiply
    20,203.74x = 27,880.53 × 11,251.05
  4. Step 4: Simplify right side
    20,203.74x = 313,685,237.06
  5. Step 5: Solve for x
    x = 313,685,237.06/20,203.74
  6. Step 6: Final answer
    x = 15,526.10

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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.