Home / 15,919.92-21,966.12-9,551.16

Finding the Fourth Proportional to 15,919.92, 21,966.12 and 9,551.16

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Solution

The fourth proportional to 15,919.92, 21,966.12 and 9,551.16 is: 13,178.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,919.92 : 21,966.12 = 9,551.16 : x
  2. Step 2: Convert to fraction form
    15,919.92/21,966.12 = 9,551.16/x
  3. Step 3: Cross multiply
    15,919.92x = 21,966.12 × 9,551.16
  4. Step 4: Simplify right side
    15,919.92x = 209,801,926.70
  5. Step 5: Solve for x
    x = 209,801,926.70/15,919.92
  6. Step 6: Final answer
    x = 13,178.58

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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.