Home / 39,223.20-58,822.16-12,921.68

Finding the Fourth Proportional to 39,223.20, 58,822.16 and 12,921.68

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Solution

The fourth proportional to 39,223.20, 58,822.16 and 12,921.68 is: 19,378.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,223.20 : 58,822.16 = 12,921.68 : x
  2. Step 2: Convert to fraction form
    39,223.20/58,822.16 = 12,921.68/x
  3. Step 3: Cross multiply
    39,223.20x = 58,822.16 × 12,921.68
  4. Step 4: Simplify right side
    39,223.20x = 760,081,128.43
  5. Step 5: Solve for x
    x = 760,081,128.43/39,223.20
  6. Step 6: Final answer
    x = 19,378.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.