Home / 39,127.90-53,996.52-21,222.84

Finding the Fourth Proportional to 39,127.90, 53,996.52 and 21,222.84

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Solution

The fourth proportional to 39,127.90, 53,996.52 and 21,222.84 is: 29,287.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,127.90 : 53,996.52 = 21,222.84 : x
  2. Step 2: Convert to fraction form
    39,127.90/53,996.52 = 21,222.84/x
  3. Step 3: Cross multiply
    39,127.90x = 53,996.52 × 21,222.84
  4. Step 4: Simplify right side
    39,127.90x = 1,145,959,504.52
  5. Step 5: Solve for x
    x = 1,145,959,504.52/39,127.90
  6. Step 6: Final answer
    x = 29,287.53

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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.