Home / 15,511.50-21,404.25-8,794.98

Finding the Fourth Proportional to 15,511.50, 21,404.25 and 8,794.98

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Solution

The fourth proportional to 15,511.50, 21,404.25 and 8,794.98 is: 12,136.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,511.50 : 21,404.25 = 8,794.98 : x
  2. Step 2: Convert to fraction form
    15,511.50/21,404.25 = 8,794.98/x
  3. Step 3: Cross multiply
    15,511.50x = 21,404.25 × 8,794.98
  4. Step 4: Simplify right side
    15,511.50x = 188,249,950.67
  5. Step 5: Solve for x
    x = 188,249,950.67/15,511.50
  6. Step 6: Final answer
    x = 12,136.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.