Home / 39,038.50-53,873.11-21,133.49

Finding the Fourth Proportional to 39,038.50, 53,873.11 and 21,133.49

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Solution

The fourth proportional to 39,038.50, 53,873.11 and 21,133.49 is: 29,164.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,038.50 : 53,873.11 = 21,133.49 : x
  2. Step 2: Convert to fraction form
    39,038.50/53,873.11 = 21,133.49/x
  3. Step 3: Cross multiply
    39,038.50x = 53,873.11 × 21,133.49
  4. Step 4: Simplify right side
    39,038.50x = 1,138,526,759.84
  5. Step 5: Solve for x
    x = 1,138,526,759.84/39,038.50
  6. Step 6: Final answer
    x = 29,164.21

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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.