Home / 13,938.07-19,234.55-7,969.86

Finding the Fourth Proportional to 13,938.07, 19,234.55 and 7,969.86

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Solution

The fourth proportional to 13,938.07, 19,234.55 and 7,969.86 is: 10,998.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.07 : 19,234.55 = 7,969.86 : x
  2. Step 2: Convert to fraction form
    13,938.07/19,234.55 = 7,969.86/x
  3. Step 3: Cross multiply
    13,938.07x = 19,234.55 × 7,969.86
  4. Step 4: Simplify right side
    13,938.07x = 153,296,670.66
  5. Step 5: Solve for x
    x = 153,296,670.66/13,938.07
  6. Step 6: Final answer
    x = 10,998.41

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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.