Home / 28,624.80-42,901.89-20,754.34

Finding the Fourth Proportional to 28,624.80, 42,901.89 and 20,754.34

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Solution

The fourth proportional to 28,624.80, 42,901.89 and 20,754.34 is: 31,105.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,624.80 : 42,901.89 = 20,754.34 : x
  2. Step 2: Convert to fraction form
    28,624.80/42,901.89 = 20,754.34/x
  3. Step 3: Cross multiply
    28,624.80x = 42,901.89 × 20,754.34
  4. Step 4: Simplify right side
    28,624.80x = 890,400,226.62
  5. Step 5: Solve for x
    x = 890,400,226.62/28,624.80
  6. Step 6: Final answer
    x = 31,105.90

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1.5x scale

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.