Home / 27,783.15-38,331.21-15,837.87

Finding the Fourth Proportional to 27,783.15, 38,331.21 and 15,837.87

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Solution

The fourth proportional to 27,783.15, 38,331.21 and 15,837.87 is: 21,850.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,783.15 : 38,331.21 = 15,837.87 : x
  2. Step 2: Convert to fraction form
    27,783.15/38,331.21 = 15,837.87/x
  3. Step 3: Cross multiply
    27,783.15x = 38,331.21 × 15,837.87
  4. Step 4: Simplify right side
    27,783.15x = 607,084,720.92
  5. Step 5: Solve for x
    x = 607,084,720.92/27,783.15
  6. Step 6: Final answer
    x = 21,850.82

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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.