Home / 20,210.24-27,889.04-11,135.30

Finding the Fourth Proportional to 20,210.24, 27,889.04 and 11,135.30

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Solution

The fourth proportional to 20,210.24, 27,889.04 and 11,135.30 is: 15,366.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210.24 : 27,889.04 = 11,135.30 : x
  2. Step 2: Convert to fraction form
    20,210.24/27,889.04 = 11,135.30/x
  3. Step 3: Cross multiply
    20,210.24x = 27,889.04 × 11,135.30
  4. Step 4: Simplify right side
    20,210.24x = 310,552,631.99
  5. Step 5: Solve for x
    x = 310,552,631.99/20,210.24
  6. Step 6: Final answer
    x = 15,366.11

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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.