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Finding the Fourth Proportional to 12,637.68, 18,950.44 and 7,374.24

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Solution

The fourth proportional to 12,637.68, 18,950.44 and 7,374.24 is: 11,057.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,637.68 : 18,950.44 = 7,374.24 : x
  2. Step 2: Convert to fraction form
    12,637.68/18,950.44 = 7,374.24/x
  3. Step 3: Cross multiply
    12,637.68x = 18,950.44 × 7,374.24
  4. Step 4: Simplify right side
    12,637.68x = 139,744,961.04
  5. Step 5: Solve for x
    x = 139,744,961.04/12,637.68
  6. Step 6: Final answer
    x = 11,057.80

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1.5x scale

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.