Home / 12,972.16-19,464.39-7,717.55

Finding the Fourth Proportional to 12,972.16, 19,464.39 and 7,717.55

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Solution

The fourth proportional to 12,972.16, 19,464.39 and 7,717.55 is: 11,579.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,972.16 : 19,464.39 = 7,717.55 : x
  2. Step 2: Convert to fraction form
    12,972.16/19,464.39 = 7,717.55/x
  3. Step 3: Cross multiply
    12,972.16x = 19,464.39 × 7,717.55
  4. Step 4: Simplify right side
    12,972.16x = 150,217,446.67
  5. Step 5: Solve for x
    x = 150,217,446.67/12,972.16
  6. Step 6: Final answer
    x = 11,579.99

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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.