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Finding the Fourth Proportional to 14,485, 21,715.20 and 13,796.08

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Solution

The fourth proportional to 14,485, 21,715.20 and 13,796.08 is: 20,682.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,485 : 21,715.20 = 13,796.08 : x
  2. Step 2: Convert to fraction form
    14,485/21,715.20 = 13,796.08/x
  3. Step 3: Cross multiply
    14,485x = 21,715.20 × 13,796.08
  4. Step 4: Simplify right side
    14,485x = 299,584,636.42
  5. Step 5: Solve for x
    x = 299,584,636.42/14,485
  6. Step 6: Final answer
    x = 20,682.40

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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.