Home / 20,362.50-28,092.38-12,805.74

Finding the Fourth Proportional to 20,362.50, 28,092.38 and 12,805.74

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Solution

The fourth proportional to 20,362.50, 28,092.38 and 12,805.74 is: 17,666.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,362.50 : 28,092.38 = 12,805.74 : x
  2. Step 2: Convert to fraction form
    20,362.50/28,092.38 = 12,805.74/x
  3. Step 3: Cross multiply
    20,362.50x = 28,092.38 × 12,805.74
  4. Step 4: Simplify right side
    20,362.50x = 359,743,650.23
  5. Step 5: Solve for x
    x = 359,743,650.23/20,362.50
  6. Step 6: Final answer
    x = 17,666.97

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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.