Home / 38,923.86-53,715.09-21,928.31

Finding the Fourth Proportional to 38,923.86, 53,715.09 and 21,928.31

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Solution

The fourth proportional to 38,923.86, 53,715.09 and 21,928.31 is: 30,261.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,923.86 : 53,715.09 = 21,928.31 : x
  2. Step 2: Convert to fraction form
    38,923.86/53,715.09 = 21,928.31/x
  3. Step 3: Cross multiply
    38,923.86x = 53,715.09 × 21,928.31
  4. Step 4: Simplify right side
    38,923.86x = 1,177,880,926.98
  5. Step 5: Solve for x
    x = 1,177,880,926.98/38,923.86
  6. Step 6: Final answer
    x = 30,261.15

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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.