Home / 11,400.16-15,741.12-8,743.36

Finding the Fourth Proportional to 11,400.16, 15,741.12 and 8,743.36

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Solution

The fourth proportional to 11,400.16, 15,741.12 and 8,743.36 is: 12,072.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,400.16 : 15,741.12 = 8,743.36 : x
  2. Step 2: Convert to fraction form
    11,400.16/15,741.12 = 8,743.36/x
  3. Step 3: Cross multiply
    11,400.16x = 15,741.12 × 8,743.36
  4. Step 4: Simplify right side
    11,400.16x = 137,630,278.96
  5. Step 5: Solve for x
    x = 137,630,278.96/11,400.16
  6. Step 6: Final answer
    x = 12,072.66

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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.