Home / 20,158.56-27,817.20-11,206.08

Finding the Fourth Proportional to 20,158.56, 27,817.20 and 11,206.08

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Solution

The fourth proportional to 20,158.56, 27,817.20 and 11,206.08 is: 15,463.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,158.56 : 27,817.20 = 11,206.08 : x
  2. Step 2: Convert to fraction form
    20,158.56/27,817.20 = 11,206.08/x
  3. Step 3: Cross multiply
    20,158.56x = 27,817.20 × 11,206.08
  4. Step 4: Simplify right side
    20,158.56x = 311,721,768.58
  5. Step 5: Solve for x
    x = 311,721,768.58/20,158.56
  6. Step 6: Final answer
    x = 15,463.49

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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.