Home / 11,157.35-15,396.69-6,678.47

Finding the Fourth Proportional to 11,157.35, 15,396.69 and 6,678.47

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Solution

The fourth proportional to 11,157.35, 15,396.69 and 6,678.47 is: 9,216.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,157.35 : 15,396.69 = 6,678.47 : x
  2. Step 2: Convert to fraction form
    11,157.35/15,396.69 = 6,678.47/x
  3. Step 3: Cross multiply
    11,157.35x = 15,396.69 × 6,678.47
  4. Step 4: Simplify right side
    11,157.35x = 102,826,332.26
  5. Step 5: Solve for x
    x = 102,826,332.26/11,157.35
  6. Step 6: Final answer
    x = 9,216.02

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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.