Home / 34,669.05-47,839.78-20,128.20

Finding the Fourth Proportional to 34,669.05, 47,839.78 and 20,128.20

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Solution

The fourth proportional to 34,669.05, 47,839.78 and 20,128.20 is: 27,774.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,669.05 : 47,839.78 = 20,128.20 : x
  2. Step 2: Convert to fraction form
    34,669.05/47,839.78 = 20,128.20/x
  3. Step 3: Cross multiply
    34,669.05x = 47,839.78 × 20,128.20
  4. Step 4: Simplify right side
    34,669.05x = 962,928,319.96
  5. Step 5: Solve for x
    x = 962,928,319.96/34,669.05
  6. Step 6: Final answer
    x = 27,774.87

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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.