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Finding the Fourth Proportional to 14,939.16, 20,617.02 and 8,651.53

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Solution

The fourth proportional to 14,939.16, 20,617.02 and 8,651.53 is: 11,939.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,939.16 : 20,617.02 = 8,651.53 : x
  2. Step 2: Convert to fraction form
    14,939.16/20,617.02 = 8,651.53/x
  3. Step 3: Cross multiply
    14,939.16x = 20,617.02 × 8,651.53
  4. Step 4: Simplify right side
    14,939.16x = 178,368,792.81
  5. Step 5: Solve for x
    x = 178,368,792.81/14,939.16
  6. Step 6: Final answer
    x = 11,939.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.