Home / 10,621.44-15,920.64-6,926.40

Finding the Fourth Proportional to 10,621.44, 15,920.64 and 6,926.40

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Solution

The fourth proportional to 10,621.44, 15,920.64 and 6,926.40 is: 10,382.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,621.44 : 15,920.64 = 6,926.40 : x
  2. Step 2: Convert to fraction form
    10,621.44/15,920.64 = 6,926.40/x
  3. Step 3: Cross multiply
    10,621.44x = 15,920.64 × 6,926.40
  4. Step 4: Simplify right side
    10,621.44x = 110,272,720.90
  5. Step 5: Solve for x
    x = 110,272,720.90/10,621.44
  6. Step 6: Final answer
    x = 10,382.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.