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Finding the Fourth Proportional to 16,990.99, 23,447.72 and 9,916.04

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Solution

The fourth proportional to 16,990.99, 23,447.72 and 9,916.04 is: 13,684.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,990.99 : 23,447.72 = 9,916.04 : x
  2. Step 2: Convert to fraction form
    16,990.99/23,447.72 = 9,916.04/x
  3. Step 3: Cross multiply
    16,990.99x = 23,447.72 × 9,916.04
  4. Step 4: Simplify right side
    16,990.99x = 232,508,612.84
  5. Step 5: Solve for x
    x = 232,508,612.84/16,990.99
  6. Step 6: Final answer
    x = 13,684.23

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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.