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Finding the Fourth Proportional to 13,079.64, 18,051.46 and 7,774.48

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Solution

The fourth proportional to 13,079.64, 18,051.46 and 7,774.48 is: 10,729.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,079.64 : 18,051.46 = 7,774.48 : x
  2. Step 2: Convert to fraction form
    13,079.64/18,051.46 = 7,774.48/x
  3. Step 3: Cross multiply
    13,079.64x = 18,051.46 × 7,774.48
  4. Step 4: Simplify right side
    13,079.64x = 140,340,714.74
  5. Step 5: Solve for x
    x = 140,340,714.74/13,079.64
  6. Step 6: Final answer
    x = 10,729.71

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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.