Home / 20,659.98-28,500.75-12,270.54

Finding the Fourth Proportional to 20,659.98, 28,500.75 and 12,270.54

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Solution

The fourth proportional to 20,659.98, 28,500.75 and 12,270.54 is: 16,927.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,659.98 : 28,500.75 = 12,270.54 : x
  2. Step 2: Convert to fraction form
    20,659.98/28,500.75 = 12,270.54/x
  3. Step 3: Cross multiply
    20,659.98x = 28,500.75 × 12,270.54
  4. Step 4: Simplify right side
    20,659.98x = 349,719,592.91
  5. Step 5: Solve for x
    x = 349,719,592.91/20,659.98
  6. Step 6: Final answer
    x = 16,927.39

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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.