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Finding the Fourth Proportional to 40,320, 60,480 and 11,136

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Solution

The fourth proportional to 40,320, 60,480 and 11,136 is: 16,704

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,320 : 60,480 = 11,136 : x
  2. Step 2: Convert to fraction form
    40,320/60,480 = 11,136/x
  3. Step 3: Cross multiply
    40,320x = 60,480 × 11,136
  4. Step 4: Simplify right side
    40,320x = 673,505,280
  5. Step 5: Solve for x
    x = 673,505,280/40,320
  6. Step 6: Final answer
    x = 16,704

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.