Home / 20,143.02-27,798.20-11,190.59

Finding the Fourth Proportional to 20,143.02, 27,798.20 and 11,190.59

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Solution

The fourth proportional to 20,143.02, 27,798.20 and 11,190.59 is: 15,443.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,143.02 : 27,798.20 = 11,190.59 : x
  2. Step 2: Convert to fraction form
    20,143.02/27,798.20 = 11,190.59/x
  3. Step 3: Cross multiply
    20,143.02x = 27,798.20 × 11,190.59
  4. Step 4: Simplify right side
    20,143.02x = 311,078,258.94
  5. Step 5: Solve for x
    x = 311,078,258.94/20,143.02
  6. Step 6: Final answer
    x = 15,443.48

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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.