Home / 11,186.80-15,438.64-6,710.72

Finding the Fourth Proportional to 11,186.80, 15,438.64 and 6,710.72

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Solution

The fourth proportional to 11,186.80, 15,438.64 and 6,710.72 is: 9,261.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,186.80 : 15,438.64 = 6,710.72 : x
  2. Step 2: Convert to fraction form
    11,186.80/15,438.64 = 6,710.72/x
  3. Step 3: Cross multiply
    11,186.80x = 15,438.64 × 6,710.72
  4. Step 4: Simplify right side
    11,186.80x = 103,604,390.22
  5. Step 5: Solve for x
    x = 103,604,390.22/11,186.80
  6. Step 6: Final answer
    x = 9,261.31

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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.