Home / 18,720.20-28,068.30-8,846.60

Finding the Fourth Proportional to 18,720.20, 28,068.30 and 8,846.60

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Solution

The fourth proportional to 18,720.20, 28,068.30 and 8,846.60 is: 13,264.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,720.20 : 28,068.30 = 8,846.60 : x
  2. Step 2: Convert to fraction form
    18,720.20/28,068.30 = 8,846.60/x
  3. Step 3: Cross multiply
    18,720.20x = 28,068.30 × 8,846.60
  4. Step 4: Simplify right side
    18,720.20x = 248,309,022.78
  5. Step 5: Solve for x
    x = 248,309,022.78/18,720.20
  6. Step 6: Final answer
    x = 13,264.23

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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.