Home / 21,756.81-30,026.52-12,198.33

Finding the Fourth Proportional to 21,756.81, 30,026.52 and 12,198.33

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Solution

The fourth proportional to 21,756.81, 30,026.52 and 12,198.33 is: 16,834.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,756.81 : 30,026.52 = 12,198.33 : x
  2. Step 2: Convert to fraction form
    21,756.81/30,026.52 = 12,198.33/x
  3. Step 3: Cross multiply
    21,756.81x = 30,026.52 × 12,198.33
  4. Step 4: Simplify right side
    21,756.81x = 366,273,399.71
  5. Step 5: Solve for x
    x = 366,273,399.71/21,756.81
  6. Step 6: Final answer
    x = 16,834.89

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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.