Home / 12,963.15-17,905.68-9,919.76

Finding the Fourth Proportional to 12,963.15, 17,905.68 and 9,919.76

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Solution

The fourth proportional to 12,963.15, 17,905.68 and 9,919.76 is: 13,701.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,963.15 : 17,905.68 = 9,919.76 : x
  2. Step 2: Convert to fraction form
    12,963.15/17,905.68 = 9,919.76/x
  3. Step 3: Cross multiply
    12,963.15x = 17,905.68 × 9,919.76
  4. Step 4: Simplify right side
    12,963.15x = 177,619,958.71
  5. Step 5: Solve for x
    x = 177,619,958.71/12,963.15
  6. Step 6: Final answer
    x = 13,701.91

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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.