Home / 28,244.90-42,409.20-15,789.80

Finding the Fourth Proportional to 28,244.90, 42,409.20 and 15,789.80

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Solution

The fourth proportional to 28,244.90, 42,409.20 and 15,789.80 is: 23,708.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,244.90 : 42,409.20 = 15,789.80 : x
  2. Step 2: Convert to fraction form
    28,244.90/42,409.20 = 15,789.80/x
  3. Step 3: Cross multiply
    28,244.90x = 42,409.20 × 15,789.80
  4. Step 4: Simplify right side
    28,244.90x = 669,632,786.16
  5. Step 5: Solve for x
    x = 669,632,786.16/28,244.90
  6. Step 6: Final answer
    x = 23,708.10

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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.