Home / 15,072.30-20,800.61-8,357.79

Finding the Fourth Proportional to 15,072.30, 20,800.61 and 8,357.79

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Solution

The fourth proportional to 15,072.30, 20,800.61 and 8,357.79 is: 11,534.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,072.30 : 20,800.61 = 8,357.79 : x
  2. Step 2: Convert to fraction form
    15,072.30/20,800.61 = 8,357.79/x
  3. Step 3: Cross multiply
    15,072.30x = 20,800.61 × 8,357.79
  4. Step 4: Simplify right side
    15,072.30x = 173,847,130.25
  5. Step 5: Solve for x
    x = 173,847,130.25/15,072.30
  6. Step 6: Final answer
    x = 11,534.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.