Home / 19,307.40-28,974.93-8,221.86

Finding the Fourth Proportional to 19,307.40, 28,974.93 and 8,221.86

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Solution

The fourth proportional to 19,307.40, 28,974.93 and 8,221.86 is: 12,338.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,307.40 : 28,974.93 = 8,221.86 : x
  2. Step 2: Convert to fraction form
    19,307.40/28,974.93 = 8,221.86/x
  3. Step 3: Cross multiply
    19,307.40x = 28,974.93 × 8,221.86
  4. Step 4: Simplify right side
    19,307.40x = 238,227,817.97
  5. Step 5: Solve for x
    x = 238,227,817.97/19,307.40
  6. Step 6: Final answer
    x = 12,338.68

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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.