Home / 13,251.77-19,877.45-3,390.97

Finding the Fourth Proportional to 13,251.77, 19,877.45 and 3,390.97

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Solution

The fourth proportional to 13,251.77, 19,877.45 and 3,390.97 is: 5,086.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,251.77 : 19,877.45 = 3,390.97 : x
  2. Step 2: Convert to fraction form
    13,251.77/19,877.45 = 3,390.97/x
  3. Step 3: Cross multiply
    13,251.77x = 19,877.45 × 3,390.97
  4. Step 4: Simplify right side
    13,251.77x = 67,403,836.63
  5. Step 5: Solve for x
    x = 67,403,836.63/13,251.77
  6. Step 6: Final answer
    x = 5,086.40

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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.