Home / 38,867.15-53,636.90-21,871.68

Finding the Fourth Proportional to 38,867.15, 53,636.90 and 21,871.68

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Solution

The fourth proportional to 38,867.15, 53,636.90 and 21,871.68 is: 30,183.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,867.15 : 53,636.90 = 21,871.68 : x
  2. Step 2: Convert to fraction form
    38,867.15/53,636.90 = 21,871.68/x
  3. Step 3: Cross multiply
    38,867.15x = 53,636.90 × 21,871.68
  4. Step 4: Simplify right side
    38,867.15x = 1,173,129,003.63
  5. Step 5: Solve for x
    x = 1,173,129,003.63/38,867.15
  6. Step 6: Final answer
    x = 30,183.04

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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.