Home / 11,420.35-17,118.85-6,479.55

Finding the Fourth Proportional to 11,420.35, 17,118.85 and 6,479.55

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Solution

The fourth proportional to 11,420.35, 17,118.85 and 6,479.55 is: 9,712.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,420.35 : 17,118.85 = 6,479.55 : x
  2. Step 2: Convert to fraction form
    11,420.35/17,118.85 = 6,479.55/x
  3. Step 3: Cross multiply
    11,420.35x = 17,118.85 × 6,479.55
  4. Step 4: Simplify right side
    11,420.35x = 110,922,385.52
  5. Step 5: Solve for x
    x = 110,922,385.52/11,420.35
  6. Step 6: Final answer
    x = 9,712.70

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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.