Home / 19,671.05-27,145.13-11,172.74

Finding the Fourth Proportional to 19,671.05, 27,145.13 and 11,172.74

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Solution

The fourth proportional to 19,671.05, 27,145.13 and 11,172.74 is: 15,417.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,671.05 : 27,145.13 = 11,172.74 : x
  2. Step 2: Convert to fraction form
    19,671.05/27,145.13 = 11,172.74/x
  3. Step 3: Cross multiply
    19,671.05x = 27,145.13 × 11,172.74
  4. Step 4: Simplify right side
    19,671.05x = 303,285,288.17
  5. Step 5: Solve for x
    x = 303,285,288.17/19,671.05
  6. Step 6: Final answer
    x = 15,417.85

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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.