Home / 31,808.82-47,718.81-12,089.10

Finding the Fourth Proportional to 31,808.82, 47,718.81 and 12,089.10

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Solution

The fourth proportional to 31,808.82, 47,718.81 and 12,089.10 is: 18,135.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,808.82 : 47,718.81 = 12,089.10 : x
  2. Step 2: Convert to fraction form
    31,808.82/47,718.81 = 12,089.10/x
  3. Step 3: Cross multiply
    31,808.82x = 47,718.81 × 12,089.10
  4. Step 4: Simplify right side
    31,808.82x = 576,877,465.97
  5. Step 5: Solve for x
    x = 576,877,465.97/31,808.82
  6. Step 6: Final answer
    x = 18,135.77

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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.