Home / 39,136.07-54,007.75-21,231.07

Finding the Fourth Proportional to 39,136.07, 54,007.75 and 21,231.07

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Solution

The fourth proportional to 39,136.07, 54,007.75 and 21,231.07 is: 29,298.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,136.07 : 54,007.75 = 21,231.07 : x
  2. Step 2: Convert to fraction form
    39,136.07/54,007.75 = 21,231.07/x
  3. Step 3: Cross multiply
    39,136.07x = 54,007.75 × 21,231.07
  4. Step 4: Simplify right side
    39,136.07x = 1,146,642,212.31
  5. Step 5: Solve for x
    x = 1,146,642,212.31/39,136.07
  6. Step 6: Final answer
    x = 29,298.86

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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.