Home / 39,862.73-55,009.91-21,959.42

Finding the Fourth Proportional to 39,862.73, 55,009.91 and 21,959.42

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Solution

The fourth proportional to 39,862.73, 55,009.91 and 21,959.42 is: 30,303.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,862.73 : 55,009.91 = 21,959.42 : x
  2. Step 2: Convert to fraction form
    39,862.73/55,009.91 = 21,959.42/x
  3. Step 3: Cross multiply
    39,862.73x = 55,009.91 × 21,959.42
  4. Step 4: Simplify right side
    39,862.73x = 1,207,985,333.01
  5. Step 5: Solve for x
    x = 1,207,985,333.01/39,862.73
  6. Step 6: Final answer
    x = 30,303.63

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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.