Home / 22,918.64-31,629.19-12,847.09

Finding the Fourth Proportional to 22,918.64, 31,629.19 and 12,847.09

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Solution

The fourth proportional to 22,918.64, 31,629.19 and 12,847.09 is: 17,729.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,918.64 : 31,629.19 = 12,847.09 : x
  2. Step 2: Convert to fraction form
    22,918.64/31,629.19 = 12,847.09/x
  3. Step 3: Cross multiply
    22,918.64x = 31,629.19 × 12,847.09
  4. Step 4: Simplify right side
    22,918.64x = 406,342,828.18
  5. Step 5: Solve for x
    x = 406,342,828.18/22,918.64
  6. Step 6: Final answer
    x = 17,729.80

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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.