Home / 38,436.78-53,042.67-21,669.66

Finding the Fourth Proportional to 38,436.78, 53,042.67 and 21,669.66

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Solution

The fourth proportional to 38,436.78, 53,042.67 and 21,669.66 is: 29,904.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,436.78 : 53,042.67 = 21,669.66 : x
  2. Step 2: Convert to fraction form
    38,436.78/53,042.67 = 21,669.66/x
  3. Step 3: Cross multiply
    38,436.78x = 53,042.67 × 21,669.66
  4. Step 4: Simplify right side
    38,436.78x = 1,149,416,624.39
  5. Step 5: Solve for x
    x = 1,149,416,624.39/38,436.78
  6. Step 6: Final answer
    x = 29,904.08

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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.