Home / 18,918.45-26,098.68-12,206.23

Finding the Fourth Proportional to 18,918.45, 26,098.68 and 12,206.23

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Solution

The fourth proportional to 18,918.45, 26,098.68 and 12,206.23 is: 16,838.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,918.45 : 26,098.68 = 12,206.23 : x
  2. Step 2: Convert to fraction form
    18,918.45/26,098.68 = 12,206.23/x
  3. Step 3: Cross multiply
    18,918.45x = 26,098.68 × 12,206.23
  4. Step 4: Simplify right side
    18,918.45x = 318,566,490.78
  5. Step 5: Solve for x
    x = 318,566,490.78/18,918.45
  6. Step 6: Final answer
    x = 16,838.93

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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.