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Finding the Fourth Proportional to 12,600.72, 18,875.12 and 7,394

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Solution

The fourth proportional to 12,600.72, 18,875.12 and 7,394 is: 11,075.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,600.72 : 18,875.12 = 7,394 : x
  2. Step 2: Convert to fraction form
    12,600.72/18,875.12 = 7,394/x
  3. Step 3: Cross multiply
    12,600.72x = 18,875.12 × 7,394
  4. Step 4: Simplify right side
    12,600.72x = 139,562,637.28
  5. Step 5: Solve for x
    x = 139,562,637.28/12,600.72
  6. Step 6: Final answer
    x = 11,075.77

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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.