Home / 13,222.81-19,807.75-7,954.91

Finding the Fourth Proportional to 13,222.81, 19,807.75 and 7,954.91

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Solution

The fourth proportional to 13,222.81, 19,807.75 and 7,954.91 is: 11,916.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,222.81 : 19,807.75 = 7,954.91 : x
  2. Step 2: Convert to fraction form
    13,222.81/19,807.75 = 7,954.91/x
  3. Step 3: Cross multiply
    13,222.81x = 19,807.75 × 7,954.91
  4. Step 4: Simplify right side
    13,222.81x = 157,568,868.55
  5. Step 5: Solve for x
    x = 157,568,868.55/13,222.81
  6. Step 6: Final answer
    x = 11,916.44

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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.