Home / 20,459.89-28,285.39-20,273.08

Finding the Fourth Proportional to 20,459.89, 28,285.39 and 20,273.08

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Solution

The fourth proportional to 20,459.89, 28,285.39 and 20,273.08 is: 28,027.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,459.89 : 28,285.39 = 20,273.08 : x
  2. Step 2: Convert to fraction form
    20,459.89/28,285.39 = 20,273.08/x
  3. Step 3: Cross multiply
    20,459.89x = 28,285.39 × 20,273.08
  4. Step 4: Simplify right side
    20,459.89x = 573,431,872.94
  5. Step 5: Solve for x
    x = 573,431,872.94/20,459.89
  6. Step 6: Final answer
    x = 28,027.13

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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.