Home / 11,801.31-16,285.94-6,423.78

Finding the Fourth Proportional to 11,801.31, 16,285.94 and 6,423.78

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Solution

The fourth proportional to 11,801.31, 16,285.94 and 6,423.78 is: 8,864.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,801.31 : 16,285.94 = 6,423.78 : x
  2. Step 2: Convert to fraction form
    11,801.31/16,285.94 = 6,423.78/x
  3. Step 3: Cross multiply
    11,801.31x = 16,285.94 × 6,423.78
  4. Step 4: Simplify right side
    11,801.31x = 104,617,263.53
  5. Step 5: Solve for x
    x = 104,617,263.53/11,801.31
  6. Step 6: Final answer
    x = 8,864.89

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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.