Home / 13,177.23-18,189.21-8,145.31

Finding the Fourth Proportional to 13,177.23, 18,189.21 and 8,145.31

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Solution

The fourth proportional to 13,177.23, 18,189.21 and 8,145.31 is: 11,243.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,177.23 : 18,189.21 = 8,145.31 : x
  2. Step 2: Convert to fraction form
    13,177.23/18,189.21 = 8,145.31/x
  3. Step 3: Cross multiply
    13,177.23x = 18,189.21 × 8,145.31
  4. Step 4: Simplify right side
    13,177.23x = 148,156,754.11
  5. Step 5: Solve for x
    x = 148,156,754.11/13,177.23
  6. Step 6: Final answer
    x = 11,243.39

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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.