Home / 13,940.18-19,228.69-8,270.91

Finding the Fourth Proportional to 13,940.18, 19,228.69 and 8,270.91

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Solution

The fourth proportional to 13,940.18, 19,228.69 and 8,270.91 is: 11,408.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,940.18 : 19,228.69 = 8,270.91 : x
  2. Step 2: Convert to fraction form
    13,940.18/19,228.69 = 8,270.91/x
  3. Step 3: Cross multiply
    13,940.18x = 19,228.69 × 8,270.91
  4. Step 4: Simplify right side
    13,940.18x = 159,038,764.41
  5. Step 5: Solve for x
    x = 159,038,764.41/13,940.18
  6. Step 6: Final answer
    x = 11,408.66

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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.