Home / 38,645.86-53,331.21-21,880.42

Finding the Fourth Proportional to 38,645.86, 53,331.21 and 21,880.42

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Solution

The fourth proportional to 38,645.86, 53,331.21 and 21,880.42 is: 30,194.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,645.86 : 53,331.21 = 21,880.42 : x
  2. Step 2: Convert to fraction form
    38,645.86/53,331.21 = 21,880.42/x
  3. Step 3: Cross multiply
    38,645.86x = 53,331.21 × 21,880.42
  4. Step 4: Simplify right side
    38,645.86x = 1,166,909,273.91
  5. Step 5: Solve for x
    x = 1,166,909,273.91/38,645.86
  6. Step 6: Final answer
    x = 30,194.94

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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.