Home / 39,079.43-53,929.19-21,173.37

Finding the Fourth Proportional to 39,079.43, 53,929.19 and 21,173.37

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Solution

The fourth proportional to 39,079.43, 53,929.19 and 21,173.37 is: 29,219.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,079.43 : 53,929.19 = 21,173.37 : x
  2. Step 2: Convert to fraction form
    39,079.43/53,929.19 = 21,173.37/x
  3. Step 3: Cross multiply
    39,079.43x = 53,929.19 × 21,173.37
  4. Step 4: Simplify right side
    39,079.43x = 1,141,862,587.80
  5. Step 5: Solve for x
    x = 1,141,862,587.80/39,079.43
  6. Step 6: Final answer
    x = 29,219.02

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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.