Home / 30,810.82-42,499.36-20,201.14

Finding the Fourth Proportional to 30,810.82, 42,499.36 and 20,201.14

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Solution

The fourth proportional to 30,810.82, 42,499.36 and 20,201.14 is: 27,864.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,810.82 : 42,499.36 = 20,201.14 : x
  2. Step 2: Convert to fraction form
    30,810.82/42,499.36 = 20,201.14/x
  3. Step 3: Cross multiply
    30,810.82x = 42,499.36 × 20,201.14
  4. Step 4: Simplify right side
    30,810.82x = 858,535,521.27
  5. Step 5: Solve for x
    x = 858,535,521.27/30,810.82
  6. Step 6: Final answer
    x = 27,864.74

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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.