Home / 15,455.40-21,331.11-8,743.11

Finding the Fourth Proportional to 15,455.40, 21,331.11 and 8,743.11

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Solution

The fourth proportional to 15,455.40, 21,331.11 and 8,743.11 is: 12,067.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,455.40 : 21,331.11 = 8,743.11 : x
  2. Step 2: Convert to fraction form
    15,455.40/21,331.11 = 8,743.11/x
  3. Step 3: Cross multiply
    15,455.40x = 21,331.11 × 8,743.11
  4. Step 4: Simplify right side
    15,455.40x = 186,500,241.15
  5. Step 5: Solve for x
    x = 186,500,241.15/15,455.40
  6. Step 6: Final answer
    x = 12,067.00

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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.