Home / 13,891.38-19,170.40-7,603.76

Finding the Fourth Proportional to 13,891.38, 19,170.40 and 7,603.76

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Solution

The fourth proportional to 13,891.38, 19,170.40 and 7,603.76 is: 10,493.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,891.38 : 19,170.40 = 7,603.76 : x
  2. Step 2: Convert to fraction form
    13,891.38/19,170.40 = 7,603.76/x
  3. Step 3: Cross multiply
    13,891.38x = 19,170.40 × 7,603.76
  4. Step 4: Simplify right side
    13,891.38x = 145,767,120.70
  5. Step 5: Solve for x
    x = 145,767,120.70/13,891.38
  6. Step 6: Final answer
    x = 10,493.35

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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.