Home / 20,679.40-31,031.86-9,584.02

Finding the Fourth Proportional to 20,679.40, 31,031.86 and 9,584.02

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Solution

The fourth proportional to 20,679.40, 31,031.86 and 9,584.02 is: 14,381.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.40 : 31,031.86 = 9,584.02 : x
  2. Step 2: Convert to fraction form
    20,679.40/31,031.86 = 9,584.02/x
  3. Step 3: Cross multiply
    20,679.40x = 31,031.86 × 9,584.02
  4. Step 4: Simplify right side
    20,679.40x = 297,409,966.88
  5. Step 5: Solve for x
    x = 297,409,966.88/20,679.40
  6. Step 6: Final answer
    x = 14,381.94

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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.