Home / 30,790.82-42,491.81-18,040.95

Finding the Fourth Proportional to 30,790.82, 42,491.81 and 18,040.95

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Solution

The fourth proportional to 30,790.82, 42,491.81 and 18,040.95 is: 24,896.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,790.82 : 42,491.81 = 18,040.95 : x
  2. Step 2: Convert to fraction form
    30,790.82/42,491.81 = 18,040.95/x
  3. Step 3: Cross multiply
    30,790.82x = 42,491.81 × 18,040.95
  4. Step 4: Simplify right side
    30,790.82x = 766,592,529.41
  5. Step 5: Solve for x
    x = 766,592,529.41/30,790.82
  6. Step 6: Final answer
    x = 24,896.79

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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.