Home / 15,144.45-20,887.50-9,840.97

Finding the Fourth Proportional to 15,144.45, 20,887.50 and 9,840.97

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Solution

The fourth proportional to 15,144.45, 20,887.50 and 9,840.97 is: 13,572.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,144.45 : 20,887.50 = 9,840.97 : x
  2. Step 2: Convert to fraction form
    15,144.45/20,887.50 = 9,840.97/x
  3. Step 3: Cross multiply
    15,144.45x = 20,887.50 × 9,840.97
  4. Step 4: Simplify right side
    15,144.45x = 205,553,260.88
  5. Step 5: Solve for x
    x = 205,553,260.88/15,144.45
  6. Step 6: Final answer
    x = 13,572.84

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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.