Home / 27,945.89-38,545.81-18,977.82

Finding the Fourth Proportional to 27,945.89, 38,545.81 and 18,977.82

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Solution

The fourth proportional to 27,945.89, 38,545.81 and 18,977.82 is: 26,176.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,945.89 : 38,545.81 = 18,977.82 : x
  2. Step 2: Convert to fraction form
    27,945.89/38,545.81 = 18,977.82/x
  3. Step 3: Cross multiply
    27,945.89x = 38,545.81 × 18,977.82
  4. Step 4: Simplify right side
    27,945.89x = 731,515,396.49
  5. Step 5: Solve for x
    x = 731,515,396.49/27,945.89
  6. Step 6: Final answer
    x = 26,176.13

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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.