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Finding the Fourth Proportional to 16,920.60, 23,351.94 and 9,368.70

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Solution

The fourth proportional to 16,920.60, 23,351.94 and 9,368.70 is: 12,929.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,920.60 : 23,351.94 = 9,368.70 : x
  2. Step 2: Convert to fraction form
    16,920.60/23,351.94 = 9,368.70/x
  3. Step 3: Cross multiply
    16,920.60x = 23,351.94 × 9,368.70
  4. Step 4: Simplify right side
    16,920.60x = 218,777,320.28
  5. Step 5: Solve for x
    x = 218,777,320.28/16,920.60
  6. Step 6: Final answer
    x = 12,929.64

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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.