Home / 19,671.36-27,127.20-12,960.96

Finding the Fourth Proportional to 19,671.36, 27,127.20 and 12,960.96

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Solution

The fourth proportional to 19,671.36, 27,127.20 and 12,960.96 is: 17,873.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,671.36 : 27,127.20 = 12,960.96 : x
  2. Step 2: Convert to fraction form
    19,671.36/27,127.20 = 12,960.96/x
  3. Step 3: Cross multiply
    19,671.36x = 27,127.20 × 12,960.96
  4. Step 4: Simplify right side
    19,671.36x = 351,594,554.11
  5. Step 5: Solve for x
    x = 351,594,554.11/19,671.36
  6. Step 6: Final answer
    x = 17,873.42

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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.