Home / 11,681.09-16,120.07-6,375.90

Finding the Fourth Proportional to 11,681.09, 16,120.07 and 6,375.90

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Solution

The fourth proportional to 11,681.09, 16,120.07 and 6,375.90 is: 8,798.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,681.09 : 16,120.07 = 6,375.90 : x
  2. Step 2: Convert to fraction form
    11,681.09/16,120.07 = 6,375.90/x
  3. Step 3: Cross multiply
    11,681.09x = 16,120.07 × 6,375.90
  4. Step 4: Simplify right side
    11,681.09x = 102,779,988.61
  5. Step 5: Solve for x
    x = 102,779,988.61/11,681.09
  6. Step 6: Final answer
    x = 8,798.84

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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.