Home / 39,292.78-54,225.09-21,388.99

Finding the Fourth Proportional to 39,292.78, 54,225.09 and 21,388.99

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Solution

The fourth proportional to 39,292.78, 54,225.09 and 21,388.99 is: 29,517.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,292.78 : 54,225.09 = 21,388.99 : x
  2. Step 2: Convert to fraction form
    39,292.78/54,225.09 = 21,388.99/x
  3. Step 3: Cross multiply
    39,292.78x = 54,225.09 × 21,388.99
  4. Step 4: Simplify right side
    39,292.78x = 1,159,819,907.76
  5. Step 5: Solve for x
    x = 1,159,819,907.76/39,292.78
  6. Step 6: Final answer
    x = 29,517.38

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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.