Home / 21,212.58-31,817.25-7,173.78

Finding the Fourth Proportional to 21,212.58, 31,817.25 and 7,173.78

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Solution

The fourth proportional to 21,212.58, 31,817.25 and 7,173.78 is: 10,760.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212.58 : 31,817.25 = 7,173.78 : x
  2. Step 2: Convert to fraction form
    21,212.58/31,817.25 = 7,173.78/x
  3. Step 3: Cross multiply
    21,212.58x = 31,817.25 × 7,173.78
  4. Step 4: Simplify right side
    21,212.58x = 228,249,951.71
  5. Step 5: Solve for x
    x = 228,249,951.71/21,212.58
  6. Step 6: Final answer
    x = 10,760.12

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1.5x scale

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.