Home / 12,157.44-16,777.56-7,124.88

Finding the Fourth Proportional to 12,157.44, 16,777.56 and 7,124.88

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Solution

The fourth proportional to 12,157.44, 16,777.56 and 7,124.88 is: 9,832.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,157.44 : 16,777.56 = 7,124.88 : x
  2. Step 2: Convert to fraction form
    12,157.44/16,777.56 = 7,124.88/x
  3. Step 3: Cross multiply
    12,157.44x = 16,777.56 × 7,124.88
  4. Step 4: Simplify right side
    12,157.44x = 119,538,101.69
  5. Step 5: Solve for x
    x = 119,538,101.69/12,157.44
  6. Step 6: Final answer
    x = 9,832.51

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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.