Home / 39,309.48-54,246.78-21,404.48

Finding the Fourth Proportional to 39,309.48, 54,246.78 and 21,404.48

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Solution

The fourth proportional to 39,309.48, 54,246.78 and 21,404.48 is: 29,538.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,309.48 : 54,246.78 = 21,404.48 : x
  2. Step 2: Convert to fraction form
    39,309.48/54,246.78 = 21,404.48/x
  3. Step 3: Cross multiply
    39,309.48x = 54,246.78 × 21,404.48
  4. Step 4: Simplify right side
    39,309.48x = 1,161,123,846.34
  5. Step 5: Solve for x
    x = 1,161,123,846.34/39,309.48
  6. Step 6: Final answer
    x = 29,538.01

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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.