Home / 38,507.76-57,783-18,786.48

Finding the Fourth Proportional to 38,507.76, 57,783 and 18,786.48

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Solution

The fourth proportional to 38,507.76, 57,783 and 18,786.48 is: 28,190.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,507.76 : 57,783 = 18,786.48 : x
  2. Step 2: Convert to fraction form
    38,507.76/57,783 = 18,786.48/x
  3. Step 3: Cross multiply
    38,507.76x = 57,783 × 18,786.48
  4. Step 4: Simplify right side
    38,507.76x = 1,085,539,173.84
  5. Step 5: Solve for x
    x = 1,085,539,173.84/38,507.76
  6. Step 6: Final answer
    x = 28,190.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.