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Finding the Fourth Proportional to 16,898.70, 25,326.45 and 12,983.70

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Solution

The fourth proportional to 16,898.70, 25,326.45 and 12,983.70 is: 19,458.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,898.70 : 25,326.45 = 12,983.70 : x
  2. Step 2: Convert to fraction form
    16,898.70/25,326.45 = 12,983.70/x
  3. Step 3: Cross multiply
    16,898.70x = 25,326.45 × 12,983.70
  4. Step 4: Simplify right side
    16,898.70x = 328,831,028.87
  5. Step 5: Solve for x
    x = 328,831,028.87/16,898.70
  6. Step 6: Final answer
    x = 19,458.95

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1.5x scale

Why These Related Problems?

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