Home / 28,133.70-42,220.98-20,757.96

Finding the Fourth Proportional to 28,133.70, 42,220.98 and 20,757.96

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Solution

The fourth proportional to 28,133.70, 42,220.98 and 20,757.96 is: 31,152.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,133.70 : 42,220.98 = 20,757.96 : x
  2. Step 2: Convert to fraction form
    28,133.70/42,220.98 = 20,757.96/x
  3. Step 3: Cross multiply
    28,133.70x = 42,220.98 × 20,757.96
  4. Step 4: Simplify right side
    28,133.70x = 876,421,414.00
  5. Step 5: Solve for x
    x = 876,421,414.00/28,133.70
  6. Step 6: Final answer
    x = 31,152.01

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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.