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Finding the Fourth Proportional to 26,136, 39,186.18 and 8,603.28

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Solution

The fourth proportional to 26,136, 39,186.18 and 8,603.28 is: 12,899.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,136 : 39,186.18 = 8,603.28 : x
  2. Step 2: Convert to fraction form
    26,136/39,186.18 = 8,603.28/x
  3. Step 3: Cross multiply
    26,136x = 39,186.18 × 8,603.28
  4. Step 4: Simplify right side
    26,136x = 337,129,678.67
  5. Step 5: Solve for x
    x = 337,129,678.67/26,136
  6. Step 6: Final answer
    x = 12,899.05

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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.