Home / 38,659.87-53,355.03-21,668.69

Finding the Fourth Proportional to 38,659.87, 53,355.03 and 21,668.69

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Solution

The fourth proportional to 38,659.87, 53,355.03 and 21,668.69 is: 29,905.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,659.87 : 53,355.03 = 21,668.69 : x
  2. Step 2: Convert to fraction form
    38,659.87/53,355.03 = 21,668.69/x
  3. Step 3: Cross multiply
    38,659.87x = 53,355.03 × 21,668.69
  4. Step 4: Simplify right side
    38,659.87x = 1,156,133,605.01
  5. Step 5: Solve for x
    x = 1,156,133,605.01/38,659.87
  6. Step 6: Final answer
    x = 29,905.27

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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.