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Finding the Fourth Proportional to 14,028.68, 21,004.68 and 13,656.92

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Solution

The fourth proportional to 14,028.68, 21,004.68 and 13,656.92 is: 20,448.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,028.68 : 21,004.68 = 13,656.92 : x
  2. Step 2: Convert to fraction form
    14,028.68/21,004.68 = 13,656.92/x
  3. Step 3: Cross multiply
    14,028.68x = 21,004.68 × 13,656.92
  4. Step 4: Simplify right side
    14,028.68x = 286,859,234.39
  5. Step 5: Solve for x
    x = 286,859,234.39/14,028.68
  6. Step 6: Final answer
    x = 20,448.06

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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.