Home / 12,164.16-18,279.16-6,621.60

Finding the Fourth Proportional to 12,164.16, 18,279.16 and 6,621.60

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Solution

The fourth proportional to 12,164.16, 18,279.16 and 6,621.60 is: 9,950.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,164.16 : 18,279.16 = 6,621.60 : x
  2. Step 2: Convert to fraction form
    12,164.16/18,279.16 = 6,621.60/x
  3. Step 3: Cross multiply
    12,164.16x = 18,279.16 × 6,621.60
  4. Step 4: Simplify right side
    12,164.16x = 121,037,285.86
  5. Step 5: Solve for x
    x = 121,037,285.86/12,164.16
  6. Step 6: Final answer
    x = 9,950.32

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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.