Home / 18,935.43-26,121.58-12,218.50

Finding the Fourth Proportional to 18,935.43, 26,121.58 and 12,218.50

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Solution

The fourth proportional to 18,935.43, 26,121.58 and 12,218.50 is: 16,855.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,935.43 : 26,121.58 = 12,218.50 : x
  2. Step 2: Convert to fraction form
    18,935.43/26,121.58 = 12,218.50/x
  3. Step 3: Cross multiply
    18,935.43x = 26,121.58 × 12,218.50
  4. Step 4: Simplify right side
    18,935.43x = 319,166,525.23
  5. Step 5: Solve for x
    x = 319,166,525.23/18,935.43
  6. Step 6: Final answer
    x = 16,855.52

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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.