Home / 10,131.22-13,979.40-6,768.64

Finding the Fourth Proportional to 10,131.22, 13,979.40 and 6,768.64

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Solution

The fourth proportional to 10,131.22, 13,979.40 and 6,768.64 is: 9,339.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,131.22 : 13,979.40 = 6,768.64 : x
  2. Step 2: Convert to fraction form
    10,131.22/13,979.40 = 6,768.64/x
  3. Step 3: Cross multiply
    10,131.22x = 13,979.40 × 6,768.64
  4. Step 4: Simplify right side
    10,131.22x = 94,621,526.02
  5. Step 5: Solve for x
    x = 94,621,526.02/10,131.22
  6. Step 6: Final answer
    x = 9,339.60

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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.