Home / 39,008.72-53,831.97-21,103.68

Finding the Fourth Proportional to 39,008.72, 53,831.97 and 21,103.68

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Solution

The fourth proportional to 39,008.72, 53,831.97 and 21,103.68 is: 29,123.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,008.72 : 53,831.97 = 21,103.68 : x
  2. Step 2: Convert to fraction form
    39,008.72/53,831.97 = 21,103.68/x
  3. Step 3: Cross multiply
    39,008.72x = 53,831.97 × 21,103.68
  4. Step 4: Simplify right side
    39,008.72x = 1,136,052,668.65
  5. Step 5: Solve for x
    x = 1,136,052,668.65/39,008.72
  6. Step 6: Final answer
    x = 29,123.05

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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.