Home / 13,938.70-19,234.14-8,272.48

Finding the Fourth Proportional to 13,938.70, 19,234.14 and 8,272.48

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Solution

The fourth proportional to 13,938.70, 19,234.14 and 8,272.48 is: 11,415.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.70 : 19,234.14 = 8,272.48 : x
  2. Step 2: Convert to fraction form
    13,938.70/19,234.14 = 8,272.48/x
  3. Step 3: Cross multiply
    13,938.70x = 19,234.14 × 8,272.48
  4. Step 4: Simplify right side
    13,938.70x = 159,114,038.47
  5. Step 5: Solve for x
    x = 159,114,038.47/13,938.70
  6. Step 6: Final answer
    x = 11,415.27

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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.