Home / 15,083.40-20,816.36-8,370.43

Finding the Fourth Proportional to 15,083.40, 20,816.36 and 8,370.43

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Solution

The fourth proportional to 15,083.40, 20,816.36 and 8,370.43 is: 11,551.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,083.40 : 20,816.36 = 8,370.43 : x
  2. Step 2: Convert to fraction form
    15,083.40/20,816.36 = 8,370.43/x
  3. Step 3: Cross multiply
    15,083.40x = 20,816.36 × 8,370.43
  4. Step 4: Simplify right side
    15,083.40x = 174,241,884.23
  5. Step 5: Solve for x
    x = 174,241,884.23/15,083.40
  6. Step 6: Final answer
    x = 11,551.90

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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.