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Finding the Fourth Proportional to 14,296.16, 19,687.92 and 12,867.68

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Solution

The fourth proportional to 14,296.16, 19,687.92 and 12,867.68 is: 17,720.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,296.16 : 19,687.92 = 12,867.68 : x
  2. Step 2: Convert to fraction form
    14,296.16/19,687.92 = 12,867.68/x
  3. Step 3: Cross multiply
    14,296.16x = 19,687.92 × 12,867.68
  4. Step 4: Simplify right side
    14,296.16x = 253,337,854.43
  5. Step 5: Solve for x
    x = 253,337,854.43/14,296.16
  6. Step 6: Final answer
    x = 17,720.69

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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.