Home / 31,401.19-47,103.32-12,678.89

Finding the Fourth Proportional to 31,401.19, 47,103.32 and 12,678.89

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Solution

The fourth proportional to 31,401.19, 47,103.32 and 12,678.89 is: 19,018.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,401.19 : 47,103.32 = 12,678.89 : x
  2. Step 2: Convert to fraction form
    31,401.19/47,103.32 = 12,678.89/x
  3. Step 3: Cross multiply
    31,401.19x = 47,103.32 × 12,678.89
  4. Step 4: Simplify right side
    31,401.19x = 597,217,940.29
  5. Step 5: Solve for x
    x = 597,217,940.29/31,401.19
  6. Step 6: Final answer
    x = 19,018.96

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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.