Home / 20,111.92-27,754.02-11,159.23

Finding the Fourth Proportional to 20,111.92, 27,754.02 and 11,159.23

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Solution

The fourth proportional to 20,111.92, 27,754.02 and 11,159.23 is: 15,399.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,111.92 : 27,754.02 = 11,159.23 : x
  2. Step 2: Convert to fraction form
    20,111.92/27,754.02 = 11,159.23/x
  3. Step 3: Cross multiply
    20,111.92x = 27,754.02 × 11,159.23
  4. Step 4: Simplify right side
    20,111.92x = 309,713,492.60
  5. Step 5: Solve for x
    x = 309,713,492.60/20,111.92
  6. Step 6: Final answer
    x = 15,399.50

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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.