Home / 30,790.32-42,491.11-18,040.45

Finding the Fourth Proportional to 30,790.32, 42,491.11 and 18,040.45

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Solution

The fourth proportional to 30,790.32, 42,491.11 and 18,040.45 is: 24,896.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,790.32 : 42,491.11 = 18,040.45 : x
  2. Step 2: Convert to fraction form
    30,790.32/42,491.11 = 18,040.45/x
  3. Step 3: Cross multiply
    30,790.32x = 42,491.11 × 18,040.45
  4. Step 4: Simplify right side
    30,790.32x = 766,558,532.94
  5. Step 5: Solve for x
    x = 766,558,532.94/30,790.32
  6. Step 6: Final answer
    x = 24,896.09

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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.