Home / 11,157.12-15,393.24-6,681.60

Finding the Fourth Proportional to 11,157.12, 15,393.24 and 6,681.60

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Solution

The fourth proportional to 11,157.12, 15,393.24 and 6,681.60 is: 9,218.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,157.12 : 15,393.24 = 6,681.60 : x
  2. Step 2: Convert to fraction form
    11,157.12/15,393.24 = 6,681.60/x
  3. Step 3: Cross multiply
    11,157.12x = 15,393.24 × 6,681.60
  4. Step 4: Simplify right side
    11,157.12x = 102,851,472.38
  5. Step 5: Solve for x
    x = 102,851,472.38/11,157.12
  6. Step 6: Final answer
    x = 9,218.46

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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.