Home / 19,919.15-27,487.89-10,966.72

Finding the Fourth Proportional to 19,919.15, 27,487.89 and 10,966.72

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Solution

The fourth proportional to 19,919.15, 27,487.89 and 10,966.72 is: 15,133.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,919.15 : 27,487.89 = 10,966.72 : x
  2. Step 2: Convert to fraction form
    19,919.15/27,487.89 = 10,966.72/x
  3. Step 3: Cross multiply
    19,919.15x = 27,487.89 × 10,966.72
  4. Step 4: Simplify right side
    19,919.15x = 301,451,800.75
  5. Step 5: Solve for x
    x = 301,451,800.75/19,919.15
  6. Step 6: Final answer
    x = 15,133.77

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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.