Home / 11,816.46-16,306.78-6,780.28

Finding the Fourth Proportional to 11,816.46, 16,306.78 and 6,780.28

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Solution

The fourth proportional to 11,816.46, 16,306.78 and 6,780.28 is: 9,356.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,816.46 : 16,306.78 = 6,780.28 : x
  2. Step 2: Convert to fraction form
    11,816.46/16,306.78 = 6,780.28/x
  3. Step 3: Cross multiply
    11,816.46x = 16,306.78 × 6,780.28
  4. Step 4: Simplify right side
    11,816.46x = 110,564,534.30
  5. Step 5: Solve for x
    x = 110,564,534.30/11,816.46
  6. Step 6: Final answer
    x = 9,356.82

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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.