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Finding the Fourth Proportional to 14,694.73, 20,284.93 and 9,921.14

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Solution

The fourth proportional to 14,694.73, 20,284.93 and 9,921.14 is: 13,695.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,694.73 : 20,284.93 = 9,921.14 : x
  2. Step 2: Convert to fraction form
    14,694.73/20,284.93 = 9,921.14/x
  3. Step 3: Cross multiply
    14,694.73x = 20,284.93 × 9,921.14
  4. Step 4: Simplify right side
    14,694.73x = 201,249,655.22
  5. Step 5: Solve for x
    x = 201,249,655.22/14,694.73
  6. Step 6: Final answer
    x = 13,695.36

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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.