Home / 20,143.77-27,798.36-11,192.10

Finding the Fourth Proportional to 20,143.77, 27,798.36 and 11,192.10

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Solution

The fourth proportional to 20,143.77, 27,798.36 and 11,192.10 is: 15,445.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,143.77 : 27,798.36 = 11,192.10 : x
  2. Step 2: Convert to fraction form
    20,143.77/27,798.36 = 11,192.10/x
  3. Step 3: Cross multiply
    20,143.77x = 27,798.36 × 11,192.10
  4. Step 4: Simplify right side
    20,143.77x = 311,122,024.96
  5. Step 5: Solve for x
    x = 311,122,024.96/20,143.77
  6. Step 6: Final answer
    x = 15,445.07

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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.