Home / 30,667.56-42,321.06-18,729.24

Finding the Fourth Proportional to 30,667.56, 42,321.06 and 18,729.24

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Solution

The fourth proportional to 30,667.56, 42,321.06 and 18,729.24 is: 25,846.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,667.56 : 42,321.06 = 18,729.24 : x
  2. Step 2: Convert to fraction form
    30,667.56/42,321.06 = 18,729.24/x
  3. Step 3: Cross multiply
    30,667.56x = 42,321.06 × 18,729.24
  4. Step 4: Simplify right side
    30,667.56x = 792,641,289.79
  5. Step 5: Solve for x
    x = 792,641,289.79/30,667.56
  6. Step 6: Final answer
    x = 25,846.25

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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.