Home / 13,131.96-18,125.55-7,470.03

Finding the Fourth Proportional to 13,131.96, 18,125.55 and 7,470.03

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Solution

The fourth proportional to 13,131.96, 18,125.55 and 7,470.03 is: 10,310.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,131.96 : 18,125.55 = 7,470.03 : x
  2. Step 2: Convert to fraction form
    13,131.96/18,125.55 = 7,470.03/x
  3. Step 3: Cross multiply
    13,131.96x = 18,125.55 × 7,470.03
  4. Step 4: Simplify right side
    13,131.96x = 135,398,402.27
  5. Step 5: Solve for x
    x = 135,398,402.27/13,131.96
  6. Step 6: Final answer
    x = 10,310.60

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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.