Home / 12,127.12-16,739.85-7,653.79

Finding the Fourth Proportional to 12,127.12, 16,739.85 and 7,653.79

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Solution

The fourth proportional to 12,127.12, 16,739.85 and 7,653.79 is: 10,565.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127.12 : 16,739.85 = 7,653.79 : x
  2. Step 2: Convert to fraction form
    12,127.12/16,739.85 = 7,653.79/x
  3. Step 3: Cross multiply
    12,127.12x = 16,739.85 × 7,653.79
  4. Step 4: Simplify right side
    12,127.12x = 128,123,296.53
  5. Step 5: Solve for x
    x = 128,123,296.53/12,127.12
  6. Step 6: Final answer
    x = 10,565.02

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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.