Home / 20,123.16-27,770.42-11,170.52

Finding the Fourth Proportional to 20,123.16, 27,770.42 and 11,170.52

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Solution

The fourth proportional to 20,123.16, 27,770.42 and 11,170.52 is: 15,415.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,123.16 : 27,770.42 = 11,170.52 : x
  2. Step 2: Convert to fraction form
    20,123.16/27,770.42 = 11,170.52/x
  3. Step 3: Cross multiply
    20,123.16x = 27,770.42 × 11,170.52
  4. Step 4: Simplify right side
    20,123.16x = 310,210,032.02
  5. Step 5: Solve for x
    x = 310,210,032.02/20,123.16
  6. Step 6: Final answer
    x = 15,415.57

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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.