Home / 22,406.73-30,918.47-12,975.21

Finding the Fourth Proportional to 22,406.73, 30,918.47 and 12,975.21

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Solution

The fourth proportional to 22,406.73, 30,918.47 and 12,975.21 is: 17,904.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,406.73 : 30,918.47 = 12,975.21 : x
  2. Step 2: Convert to fraction form
    22,406.73/30,918.47 = 12,975.21/x
  3. Step 3: Cross multiply
    22,406.73x = 30,918.47 × 12,975.21
  4. Step 4: Simplify right side
    22,406.73x = 401,173,576.25
  5. Step 5: Solve for x
    x = 401,173,576.25/22,406.73
  6. Step 6: Final answer
    x = 17,904.16

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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.