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Finding the Fourth Proportional to 19,004.64, 26,224.08 and 10,620

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Solution

The fourth proportional to 19,004.64, 26,224.08 and 10,620 is: 14,654.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,004.64 : 26,224.08 = 10,620 : x
  2. Step 2: Convert to fraction form
    19,004.64/26,224.08 = 10,620/x
  3. Step 3: Cross multiply
    19,004.64x = 26,224.08 × 10,620
  4. Step 4: Simplify right side
    19,004.64x = 278,499,729.60
  5. Step 5: Solve for x
    x = 278,499,729.60/19,004.64
  6. Step 6: Final answer
    x = 14,654.30

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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.