Home / 30,790.57-42,491.46-18,040.70

Finding the Fourth Proportional to 30,790.57, 42,491.46 and 18,040.70

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Solution

The fourth proportional to 30,790.57, 42,491.46 and 18,040.70 is: 24,896.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,790.57 : 42,491.46 = 18,040.70 : x
  2. Step 2: Convert to fraction form
    30,790.57/42,491.46 = 18,040.70/x
  3. Step 3: Cross multiply
    30,790.57x = 42,491.46 × 18,040.70
  4. Step 4: Simplify right side
    30,790.57x = 766,575,592.22
  5. Step 5: Solve for x
    x = 766,575,592.22/30,790.57
  6. Step 6: Final answer
    x = 24,896.44

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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.