Home / 13,938.48-19,236.42-7,651.80

Finding the Fourth Proportional to 13,938.48, 19,236.42 and 7,651.80

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Solution

The fourth proportional to 13,938.48, 19,236.42 and 7,651.80 is: 10,560.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.48 : 19,236.42 = 7,651.80 : x
  2. Step 2: Convert to fraction form
    13,938.48/19,236.42 = 7,651.80/x
  3. Step 3: Cross multiply
    13,938.48x = 19,236.42 × 7,651.80
  4. Step 4: Simplify right side
    13,938.48x = 147,193,238.56
  5. Step 5: Solve for x
    x = 147,193,238.56/13,938.48
  6. Step 6: Final answer
    x = 10,560.21

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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.