Home / 11,681.61-16,120.74-6,376.51

Finding the Fourth Proportional to 11,681.61, 16,120.74 and 6,376.51

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Solution

The fourth proportional to 11,681.61, 16,120.74 and 6,376.51 is: 8,799.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,681.61 : 16,120.74 = 6,376.51 : x
  2. Step 2: Convert to fraction form
    11,681.61/16,120.74 = 6,376.51/x
  3. Step 3: Cross multiply
    11,681.61x = 16,120.74 × 6,376.51
  4. Step 4: Simplify right side
    11,681.61x = 102,794,027.93
  5. Step 5: Solve for x
    x = 102,794,027.93/11,681.61
  6. Step 6: Final answer
    x = 8,799.65

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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.