Home / 39,137.64-54,009.36-21,232.68

Finding the Fourth Proportional to 39,137.64, 54,009.36 and 21,232.68

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Solution

The fourth proportional to 39,137.64, 54,009.36 and 21,232.68 is: 29,300.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,137.64 : 54,009.36 = 21,232.68 : x
  2. Step 2: Convert to fraction form
    39,137.64/54,009.36 = 21,232.68/x
  3. Step 3: Cross multiply
    39,137.64x = 54,009.36 × 21,232.68
  4. Step 4: Simplify right side
    39,137.64x = 1,146,763,457.88
  5. Step 5: Solve for x
    x = 1,146,763,457.88/39,137.64
  6. Step 6: Final answer
    x = 29,300.78

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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.