Home / 12,156.64-18,222.66-4,756.48

Finding the Fourth Proportional to 12,156.64, 18,222.66 and 4,756.48

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Solution

The fourth proportional to 12,156.64, 18,222.66 and 4,756.48 is: 7,129.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,156.64 : 18,222.66 = 4,756.48 : x
  2. Step 2: Convert to fraction form
    12,156.64/18,222.66 = 4,756.48/x
  3. Step 3: Cross multiply
    12,156.64x = 18,222.66 × 4,756.48
  4. Step 4: Simplify right side
    12,156.64x = 86,675,717.84
  5. Step 5: Solve for x
    x = 86,675,717.84/12,156.64
  6. Step 6: Final answer
    x = 7,129.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.