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Finding the Fourth Proportional to 26,376.12, 39,558 and 7,651.20

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Solution

The fourth proportional to 26,376.12, 39,558 and 7,651.20 is: 11,475.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,376.12 : 39,558 = 7,651.20 : x
  2. Step 2: Convert to fraction form
    26,376.12/39,558 = 7,651.20/x
  3. Step 3: Cross multiply
    26,376.12x = 39,558 × 7,651.20
  4. Step 4: Simplify right side
    26,376.12x = 302,666,169.60
  5. Step 5: Solve for x
    x = 302,666,169.60/26,376.12
  6. Step 6: Final answer
    x = 11,475.01

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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.