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Finding the Fourth Proportional to 17,616.55, 26,395.10 and 8,720.01

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Solution

The fourth proportional to 17,616.55, 26,395.10 and 8,720.01 is: 13,065.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,616.55 : 26,395.10 = 8,720.01 : x
  2. Step 2: Convert to fraction form
    17,616.55/26,395.10 = 8,720.01/x
  3. Step 3: Cross multiply
    17,616.55x = 26,395.10 × 8,720.01
  4. Step 4: Simplify right side
    17,616.55x = 230,165,492.35
  5. Step 5: Solve for x
    x = 230,165,492.35/17,616.55
  6. Step 6: Final answer
    x = 13,065.30

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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.