Home / 19,489.33-26,899.57-12,671.48

Finding the Fourth Proportional to 19,489.33, 26,899.57 and 12,671.48

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Solution

The fourth proportional to 19,489.33, 26,899.57 and 12,671.48 is: 17,489.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,489.33 : 26,899.57 = 12,671.48 : x
  2. Step 2: Convert to fraction form
    19,489.33/26,899.57 = 12,671.48/x
  3. Step 3: Cross multiply
    19,489.33x = 26,899.57 × 12,671.48
  4. Step 4: Simplify right side
    19,489.33x = 340,857,363.26
  5. Step 5: Solve for x
    x = 340,857,363.26/19,489.33
  6. Step 6: Final answer
    x = 17,489.44

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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.