Home / 20,203.29-27,880.47-11,250.90

Finding the Fourth Proportional to 20,203.29, 27,880.47 and 11,250.90

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Solution

The fourth proportional to 20,203.29, 27,880.47 and 11,250.90 is: 15,526.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,203.29 : 27,880.47 = 11,250.90 : x
  2. Step 2: Convert to fraction form
    20,203.29/27,880.47 = 11,250.90/x
  3. Step 3: Cross multiply
    20,203.29x = 27,880.47 × 11,250.90
  4. Step 4: Simplify right side
    20,203.29x = 313,680,379.92
  5. Step 5: Solve for x
    x = 313,680,379.92/20,203.29
  6. Step 6: Final answer
    x = 15,526.20

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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.