Home / 27,993.29-38,638.68-18,440.15

Finding the Fourth Proportional to 27,993.29, 38,638.68 and 18,440.15

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Solution

The fourth proportional to 27,993.29, 38,638.68 and 18,440.15 is: 25,452.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,993.29 : 38,638.68 = 18,440.15 : x
  2. Step 2: Convert to fraction form
    27,993.29/38,638.68 = 18,440.15/x
  3. Step 3: Cross multiply
    27,993.29x = 38,638.68 × 18,440.15
  4. Step 4: Simplify right side
    27,993.29x = 712,502,861.81
  5. Step 5: Solve for x
    x = 712,502,861.81/27,993.29
  6. Step 6: Final answer
    x = 25,452.63

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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.