Home / 38,874.21-53,645.56-21,646.45

Finding the Fourth Proportional to 38,874.21, 53,645.56 and 21,646.45

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Solution

The fourth proportional to 38,874.21, 53,645.56 and 21,646.45 is: 29,871.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,874.21 : 53,645.56 = 21,646.45 : x
  2. Step 2: Convert to fraction form
    38,874.21/53,645.56 = 21,646.45/x
  3. Step 3: Cross multiply
    38,874.21x = 53,645.56 × 21,646.45
  4. Step 4: Simplify right side
    38,874.21x = 1,161,235,932.26
  5. Step 5: Solve for x
    x = 1,161,235,932.26/38,874.21
  6. Step 6: Final answer
    x = 29,871.63

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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.