Home / 27,771.72-38,285.10-19,800.10

Finding the Fourth Proportional to 27,771.72, 38,285.10 and 19,800.10

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Solution

The fourth proportional to 27,771.72, 38,285.10 and 19,800.10 is: 27,295.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,771.72 : 38,285.10 = 19,800.10 : x
  2. Step 2: Convert to fraction form
    27,771.72/38,285.10 = 19,800.10/x
  3. Step 3: Cross multiply
    27,771.72x = 38,285.10 × 19,800.10
  4. Step 4: Simplify right side
    27,771.72x = 758,048,808.51
  5. Step 5: Solve for x
    x = 758,048,808.51/27,771.72
  6. Step 6: Final answer
    x = 27,295.71

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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.