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Finding the Fourth Proportional to 16,490.80, 23,133.20 and 16,490.80

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Solution

The fourth proportional to 16,490.80, 23,133.20 and 16,490.80 is: 23,133.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,490.80 : 23,133.20 = 16,490.80 : x
  2. Step 2: Convert to fraction form
    16,490.80/23,133.20 = 16,490.80/x
  3. Step 3: Cross multiply
    16,490.80x = 23,133.20 × 16,490.80
  4. Step 4: Simplify right side
    16,490.80x = 381,484,974.56
  5. Step 5: Solve for x
    x = 381,484,974.56/16,490.80
  6. Step 6: Final answer
    x = 23,133.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.