Home / 39,699.23-54,785.03-21,795.39

Finding the Fourth Proportional to 39,699.23, 54,785.03 and 21,795.39

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Solution

The fourth proportional to 39,699.23, 54,785.03 and 21,795.39 is: 30,077.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,699.23 : 54,785.03 = 21,795.39 : x
  2. Step 2: Convert to fraction form
    39,699.23/54,785.03 = 21,795.39/x
  3. Step 3: Cross multiply
    39,699.23x = 54,785.03 × 21,795.39
  4. Step 4: Simplify right side
    39,699.23x = 1,194,061,246.97
  5. Step 5: Solve for x
    x = 1,194,061,246.97/39,699.23
  6. Step 6: Final answer
    x = 30,077.69

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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.