Home / 38,929.80-53,717.37-21,930.64

Finding the Fourth Proportional to 38,929.80, 53,717.37 and 21,930.64

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Solution

The fourth proportional to 38,929.80, 53,717.37 and 21,930.64 is: 30,261.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,929.80 : 53,717.37 = 21,930.64 : x
  2. Step 2: Convert to fraction form
    38,929.80/53,717.37 = 21,930.64/x
  3. Step 3: Cross multiply
    38,929.80x = 53,717.37 × 21,930.64
  4. Step 4: Simplify right side
    38,929.80x = 1,178,056,303.22
  5. Step 5: Solve for x
    x = 1,178,056,303.22/38,929.80
  6. Step 6: Final answer
    x = 30,261.04

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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.