Home / 10,889.12-15,022.48-6,465.44

Finding the Fourth Proportional to 10,889.12, 15,022.48 and 6,465.44

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Solution

The fourth proportional to 10,889.12, 15,022.48 and 6,465.44 is: 8,919.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,889.12 : 15,022.48 = 6,465.44 : x
  2. Step 2: Convert to fraction form
    10,889.12/15,022.48 = 6,465.44/x
  3. Step 3: Cross multiply
    10,889.12x = 15,022.48 × 6,465.44
  4. Step 4: Simplify right side
    10,889.12x = 97,126,943.09
  5. Step 5: Solve for x
    x = 97,126,943.09/10,889.12
  6. Step 6: Final answer
    x = 8,919.63

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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.