Home / 15,720.20-23,568.30-7,934.60

Finding the Fourth Proportional to 15,720.20, 23,568.30 and 7,934.60

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Solution

The fourth proportional to 15,720.20, 23,568.30 and 7,934.60 is: 11,895.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,720.20 : 23,568.30 = 7,934.60 : x
  2. Step 2: Convert to fraction form
    15,720.20/23,568.30 = 7,934.60/x
  3. Step 3: Cross multiply
    15,720.20x = 23,568.30 × 7,934.60
  4. Step 4: Simplify right side
    15,720.20x = 187,005,033.18
  5. Step 5: Solve for x
    x = 187,005,033.18/15,720.20
  6. Step 6: Final answer
    x = 11,895.84

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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.