Home / 12,158.28-16,785.66-7,973.82

Finding the Fourth Proportional to 12,158.28, 16,785.66 and 7,973.82

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Solution

The fourth proportional to 12,158.28, 16,785.66 and 7,973.82 is: 11,008.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,158.28 : 16,785.66 = 7,973.82 : x
  2. Step 2: Convert to fraction form
    12,158.28/16,785.66 = 7,973.82/x
  3. Step 3: Cross multiply
    12,158.28x = 16,785.66 × 7,973.82
  4. Step 4: Simplify right side
    12,158.28x = 133,845,831.42
  5. Step 5: Solve for x
    x = 133,845,831.42/12,158.28
  6. Step 6: Final answer
    x = 11,008.62

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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.