Home / 20,156.48-27,817.76-11,205.80

Finding the Fourth Proportional to 20,156.48, 27,817.76 and 11,205.80

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Solution

The fourth proportional to 20,156.48, 27,817.76 and 11,205.80 is: 15,465.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,156.48 : 27,817.76 = 11,205.80 : x
  2. Step 2: Convert to fraction form
    20,156.48/27,817.76 = 11,205.80/x
  3. Step 3: Cross multiply
    20,156.48x = 27,817.76 × 11,205.80
  4. Step 4: Simplify right side
    20,156.48x = 311,720,255.01
  5. Step 5: Solve for x
    x = 311,720,255.01/20,156.48
  6. Step 6: Final answer
    x = 15,465.01

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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.