Home / 38,930.42-53,712.86-21,928.70

Finding the Fourth Proportional to 38,930.42, 53,712.86 and 21,928.70

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Solution

The fourth proportional to 38,930.42, 53,712.86 and 21,928.70 is: 30,255.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,930.42 : 53,712.86 = 21,928.70 : x
  2. Step 2: Convert to fraction form
    38,930.42/53,712.86 = 21,928.70/x
  3. Step 3: Cross multiply
    38,930.42x = 53,712.86 × 21,928.70
  4. Step 4: Simplify right side
    38,930.42x = 1,177,852,814.87
  5. Step 5: Solve for x
    x = 1,177,852,814.87/38,930.42
  6. Step 6: Final answer
    x = 30,255.34

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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.