Home / 22,209.04-30,647.92-12,782.80

Finding the Fourth Proportional to 22,209.04, 30,647.92 and 12,782.80

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Solution

The fourth proportional to 22,209.04, 30,647.92 and 12,782.80 is: 17,639.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,209.04 : 30,647.92 = 12,782.80 : x
  2. Step 2: Convert to fraction form
    22,209.04/30,647.92 = 12,782.80/x
  3. Step 3: Cross multiply
    22,209.04x = 30,647.92 × 12,782.80
  4. Step 4: Simplify right side
    22,209.04x = 391,766,231.78
  5. Step 5: Solve for x
    x = 391,766,231.78/22,209.04
  6. Step 6: Final answer
    x = 17,639.94

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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.