Home / 31,795.54-43,878.01-19,865.79

Finding the Fourth Proportional to 31,795.54, 43,878.01 and 19,865.79

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Solution

The fourth proportional to 31,795.54, 43,878.01 and 19,865.79 is: 27,414.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,795.54 : 43,878.01 = 19,865.79 : x
  2. Step 2: Convert to fraction form
    31,795.54/43,878.01 = 19,865.79/x
  3. Step 3: Cross multiply
    31,795.54x = 43,878.01 × 19,865.79
  4. Step 4: Simplify right side
    31,795.54x = 871,671,402.13
  5. Step 5: Solve for x
    x = 871,671,402.13/31,795.54
  6. Step 6: Final answer
    x = 27,414.90

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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.