Home / 21,072.29-31,581.90-18,433.51

Finding the Fourth Proportional to 21,072.29, 31,581.90 and 18,433.51

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Solution

The fourth proportional to 21,072.29, 31,581.90 and 18,433.51 is: 27,627.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,072.29 : 31,581.90 = 18,433.51 : x
  2. Step 2: Convert to fraction form
    21,072.29/31,581.90 = 18,433.51/x
  3. Step 3: Cross multiply
    21,072.29x = 31,581.90 × 18,433.51
  4. Step 4: Simplify right side
    21,072.29x = 582,165,190.51
  5. Step 5: Solve for x
    x = 582,165,190.51/21,072.29
  6. Step 6: Final answer
    x = 27,627.06

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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.