Home / 20,553.50-28,363.84-11,122.07

Finding the Fourth Proportional to 20,553.50, 28,363.84 and 11,122.07

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Solution

The fourth proportional to 20,553.50, 28,363.84 and 11,122.07 is: 15,348.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,553.50 : 28,363.84 = 11,122.07 : x
  2. Step 2: Convert to fraction form
    20,553.50/28,363.84 = 11,122.07/x
  3. Step 3: Cross multiply
    20,553.50x = 28,363.84 × 11,122.07
  4. Step 4: Simplify right side
    20,553.50x = 315,464,444.32
  5. Step 5: Solve for x
    x = 315,464,444.32/20,553.50
  6. Step 6: Final answer
    x = 15,348.45

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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.