Home / 13,305.68-18,360.15-8,270.72

Finding the Fourth Proportional to 13,305.68, 18,360.15 and 8,270.72

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Solution

The fourth proportional to 13,305.68, 18,360.15 and 8,270.72 is: 11,412.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,305.68 : 18,360.15 = 8,270.72 : x
  2. Step 2: Convert to fraction form
    13,305.68/18,360.15 = 8,270.72/x
  3. Step 3: Cross multiply
    13,305.68x = 18,360.15 × 8,270.72
  4. Step 4: Simplify right side
    13,305.68x = 151,851,659.81
  5. Step 5: Solve for x
    x = 151,851,659.81/13,305.68
  6. Step 6: Final answer
    x = 11,412.54

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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.