Home / 13,904.67-19,188.43-7,938.21

Finding the Fourth Proportional to 13,904.67, 19,188.43 and 7,938.21

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Solution

The fourth proportional to 13,904.67, 19,188.43 and 7,938.21 is: 10,954.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,904.67 : 19,188.43 = 7,938.21 : x
  2. Step 2: Convert to fraction form
    13,904.67/19,188.43 = 7,938.21/x
  3. Step 3: Cross multiply
    13,904.67x = 19,188.43 × 7,938.21
  4. Step 4: Simplify right side
    13,904.67x = 152,321,839.02
  5. Step 5: Solve for x
    x = 152,321,839.02/13,904.67
  6. Step 6: Final answer
    x = 10,954.72

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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.