Home / 47,028.80-70,529.12-18,939.84

Finding the Fourth Proportional to 47,028.80, 70,529.12 and 18,939.84

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Solution

The fourth proportional to 47,028.80, 70,529.12 and 18,939.84 is: 28,404.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,028.80 : 70,529.12 = 18,939.84 : x
  2. Step 2: Convert to fraction form
    47,028.80/70,529.12 = 18,939.84/x
  3. Step 3: Cross multiply
    47,028.80x = 70,529.12 × 18,939.84
  4. Step 4: Simplify right side
    47,028.80x = 1,335,810,248.14
  5. Step 5: Solve for x
    x = 1,335,810,248.14/47,028.80
  6. Step 6: Final answer
    x = 28,404.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.