Home / 22,280.80-33,421.20-19,861.60

Finding the Fourth Proportional to 22,280.80, 33,421.20 and 19,861.60

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Solution

The fourth proportional to 22,280.80, 33,421.20 and 19,861.60 is: 29,792.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,280.80 : 33,421.20 = 19,861.60 : x
  2. Step 2: Convert to fraction form
    22,280.80/33,421.20 = 19,861.60/x
  3. Step 3: Cross multiply
    22,280.80x = 33,421.20 × 19,861.60
  4. Step 4: Simplify right side
    22,280.80x = 663,798,505.92
  5. Step 5: Solve for x
    x = 663,798,505.92/22,280.80
  6. Step 6: Final answer
    x = 29,792.40

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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.