Home / 19,860.72-29,812.88-16,778.80

Finding the Fourth Proportional to 19,860.72, 29,812.88 and 16,778.80

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Solution

The fourth proportional to 19,860.72, 29,812.88 and 16,778.80 is: 25,186.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,860.72 : 29,812.88 = 16,778.80 : x
  2. Step 2: Convert to fraction form
    19,860.72/29,812.88 = 16,778.80/x
  3. Step 3: Cross multiply
    19,860.72x = 29,812.88 × 16,778.80
  4. Step 4: Simplify right side
    19,860.72x = 500,224,350.94
  5. Step 5: Solve for x
    x = 500,224,350.94/19,860.72
  6. Step 6: Final answer
    x = 25,186.62

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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.