Home / 12,741.68-17,580-8,268.08

Finding the Fourth Proportional to 12,741.68, 17,580 and 8,268.08

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Solution

The fourth proportional to 12,741.68, 17,580 and 8,268.08 is: 11,407.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,741.68 : 17,580 = 8,268.08 : x
  2. Step 2: Convert to fraction form
    12,741.68/17,580 = 8,268.08/x
  3. Step 3: Cross multiply
    12,741.68x = 17,580 × 8,268.08
  4. Step 4: Simplify right side
    12,741.68x = 145,352,846.40
  5. Step 5: Solve for x
    x = 145,352,846.40/12,741.68
  6. Step 6: Final answer
    x = 11,407.67

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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.