Home / 12,156.84-18,236.70-4,256.94

Finding the Fourth Proportional to 12,156.84, 18,236.70 and 4,256.94

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Solution

The fourth proportional to 12,156.84, 18,236.70 and 4,256.94 is: 6,385.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,156.84 : 18,236.70 = 4,256.94 : x
  2. Step 2: Convert to fraction form
    12,156.84/18,236.70 = 4,256.94/x
  3. Step 3: Cross multiply
    12,156.84x = 18,236.70 × 4,256.94
  4. Step 4: Simplify right side
    12,156.84x = 77,632,537.70
  5. Step 5: Solve for x
    x = 77,632,537.70/12,156.84
  6. Step 6: Final answer
    x = 6,385.91

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1.5x scale

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.