Home / 11,904.12-17,854.74-3,139.70

Finding the Fourth Proportional to 11,904.12, 17,854.74 and 3,139.70

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Solution

The fourth proportional to 11,904.12, 17,854.74 and 3,139.70 is: 4,709.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,904.12 : 17,854.74 = 3,139.70 : x
  2. Step 2: Convert to fraction form
    11,904.12/17,854.74 = 3,139.70/x
  3. Step 3: Cross multiply
    11,904.12x = 17,854.74 × 3,139.70
  4. Step 4: Simplify right side
    11,904.12x = 56,058,437.90
  5. Step 5: Solve for x
    x = 56,058,437.90/11,904.12
  6. Step 6: Final answer
    x = 4,709.16

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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.