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Finding the Fourth Proportional to 14,179.16, 21,254.86 and 5,287.98

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Solution

The fourth proportional to 14,179.16, 21,254.86 and 5,287.98 is: 7,926.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,179.16 : 21,254.86 = 5,287.98 : x
  2. Step 2: Convert to fraction form
    14,179.16/21,254.86 = 5,287.98/x
  3. Step 3: Cross multiply
    14,179.16x = 21,254.86 × 5,287.98
  4. Step 4: Simplify right side
    14,179.16x = 112,395,274.58
  5. Step 5: Solve for x
    x = 112,395,274.58/14,179.16
  6. Step 6: Final answer
    x = 7,926.79

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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.