Home / 20,865.50-28,794.42-12,482

Finding the Fourth Proportional to 20,865.50, 28,794.42 and 12,482

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Solution

The fourth proportional to 20,865.50, 28,794.42 and 12,482 is: 17,225.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,865.50 : 28,794.42 = 12,482 : x
  2. Step 2: Convert to fraction form
    20,865.50/28,794.42 = 12,482/x
  3. Step 3: Cross multiply
    20,865.50x = 28,794.42 × 12,482
  4. Step 4: Simplify right side
    20,865.50x = 359,411,950.44
  5. Step 5: Solve for x
    x = 359,411,950.44/20,865.50
  6. Step 6: Final answer
    x = 17,225.18

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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.