Home / 21,767.81-30,038.04-12,206.97

Finding the Fourth Proportional to 21,767.81, 30,038.04 and 12,206.97

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Solution

The fourth proportional to 21,767.81, 30,038.04 and 12,206.97 is: 16,844.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,767.81 : 30,038.04 = 12,206.97 : x
  2. Step 2: Convert to fraction form
    21,767.81/30,038.04 = 12,206.97/x
  3. Step 3: Cross multiply
    21,767.81x = 30,038.04 × 12,206.97
  4. Step 4: Simplify right side
    21,767.81x = 366,673,453.14
  5. Step 5: Solve for x
    x = 366,673,453.14/21,767.81
  6. Step 6: Final answer
    x = 16,844.76

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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.