Home / 19,981.35-29,960.99-12,569.95

Finding the Fourth Proportional to 19,981.35, 29,960.99 and 12,569.95

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Solution

The fourth proportional to 19,981.35, 29,960.99 and 12,569.95 is: 18,847.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,981.35 : 29,960.99 = 12,569.95 : x
  2. Step 2: Convert to fraction form
    19,981.35/29,960.99 = 12,569.95/x
  3. Step 3: Cross multiply
    19,981.35x = 29,960.99 × 12,569.95
  4. Step 4: Simplify right side
    19,981.35x = 376,608,167.99
  5. Step 5: Solve for x
    x = 376,608,167.99/19,981.35
  6. Step 6: Final answer
    x = 18,847.98

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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.