Home / 31,421.34-47,138.96-10,367.89

Finding the Fourth Proportional to 31,421.34, 47,138.96 and 10,367.89

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Solution

The fourth proportional to 31,421.34, 47,138.96 and 10,367.89 is: 15,554.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,421.34 : 47,138.96 = 10,367.89 : x
  2. Step 2: Convert to fraction form
    31,421.34/47,138.96 = 10,367.89/x
  3. Step 3: Cross multiply
    31,421.34x = 47,138.96 × 10,367.89
  4. Step 4: Simplify right side
    31,421.34x = 488,731,551.99
  5. Step 5: Solve for x
    x = 488,731,551.99/31,421.34
  6. Step 6: Final answer
    x = 15,554.13

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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.