Home / 38,403.78-52,997.45-21,409.11

Finding the Fourth Proportional to 38,403.78, 52,997.45 and 21,409.11

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Solution

The fourth proportional to 38,403.78, 52,997.45 and 21,409.11 is: 29,544.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,403.78 : 52,997.45 = 21,409.11 : x
  2. Step 2: Convert to fraction form
    38,403.78/52,997.45 = 21,409.11/x
  3. Step 3: Cross multiply
    38,403.78x = 52,997.45 × 21,409.11
  4. Step 4: Simplify right side
    38,403.78x = 1,134,628,129.72
  5. Step 5: Solve for x
    x = 1,134,628,129.72/38,403.78
  6. Step 6: Final answer
    x = 29,544.70

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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.