Home / 20,061.02-27,685.20-11,109.50

Finding the Fourth Proportional to 20,061.02, 27,685.20 and 11,109.50

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Solution

The fourth proportional to 20,061.02, 27,685.20 and 11,109.50 is: 15,331.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,061.02 : 27,685.20 = 11,109.50 : x
  2. Step 2: Convert to fraction form
    20,061.02/27,685.20 = 11,109.50/x
  3. Step 3: Cross multiply
    20,061.02x = 27,685.20 × 11,109.50
  4. Step 4: Simplify right side
    20,061.02x = 307,568,729.40
  5. Step 5: Solve for x
    x = 307,568,729.40/20,061.02
  6. Step 6: Final answer
    x = 15,331.66

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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.