Home / 11,877.21-16,390.31-6,571.71

Finding the Fourth Proportional to 11,877.21, 16,390.31 and 6,571.71

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Solution

The fourth proportional to 11,877.21, 16,390.31 and 6,571.71 is: 9,068.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,877.21 : 16,390.31 = 6,571.71 : x
  2. Step 2: Convert to fraction form
    11,877.21/16,390.31 = 6,571.71/x
  3. Step 3: Cross multiply
    11,877.21x = 16,390.31 × 6,571.71
  4. Step 4: Simplify right side
    11,877.21x = 107,712,331.27
  5. Step 5: Solve for x
    x = 107,712,331.27/11,877.21
  6. Step 6: Final answer
    x = 9,068.82

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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.