Home / 10,965.39-15,131.32-6,488.36

Finding the Fourth Proportional to 10,965.39, 15,131.32 and 6,488.36

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Solution

The fourth proportional to 10,965.39, 15,131.32 and 6,488.36 is: 8,953.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,965.39 : 15,131.32 = 6,488.36 : x
  2. Step 2: Convert to fraction form
    10,965.39/15,131.32 = 6,488.36/x
  3. Step 3: Cross multiply
    10,965.39x = 15,131.32 × 6,488.36
  4. Step 4: Simplify right side
    10,965.39x = 98,177,451.44
  5. Step 5: Solve for x
    x = 98,177,451.44/10,965.39
  6. Step 6: Final answer
    x = 8,953.39

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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.