Home / 39,039.45-53,873.81-21,134.30

Finding the Fourth Proportional to 39,039.45, 53,873.81 and 21,134.30

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Solution

The fourth proportional to 39,039.45, 53,873.81 and 21,134.30 is: 29,164.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,039.45 : 53,873.81 = 21,134.30 : x
  2. Step 2: Convert to fraction form
    39,039.45/53,873.81 = 21,134.30/x
  3. Step 3: Cross multiply
    39,039.45x = 53,873.81 × 21,134.30
  4. Step 4: Simplify right side
    39,039.45x = 1,138,584,887.64
  5. Step 5: Solve for x
    x = 1,138,584,887.64/39,039.45
  6. Step 6: Final answer
    x = 29,164.98

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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.