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Finding the Fourth Proportional to 15,620, 23,419.59 and 8,603.30

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Solution

The fourth proportional to 15,620, 23,419.59 and 8,603.30 is: 12,899.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,620 : 23,419.59 = 8,603.30 : x
  2. Step 2: Convert to fraction form
    15,620/23,419.59 = 8,603.30/x
  3. Step 3: Cross multiply
    15,620x = 23,419.59 × 8,603.30
  4. Step 4: Simplify right side
    15,620x = 201,485,758.65
  5. Step 5: Solve for x
    x = 201,485,758.65/15,620
  6. Step 6: Final answer
    x = 12,899.22

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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.