Home / 13,679.07-18,877.11-7,391.45

Finding the Fourth Proportional to 13,679.07, 18,877.11 and 7,391.45

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Solution

The fourth proportional to 13,679.07, 18,877.11 and 7,391.45 is: 10,200.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,679.07 : 18,877.11 = 7,391.45 : x
  2. Step 2: Convert to fraction form
    13,679.07/18,877.11 = 7,391.45/x
  3. Step 3: Cross multiply
    13,679.07x = 18,877.11 × 7,391.45
  4. Step 4: Simplify right side
    13,679.07x = 139,529,120.32
  5. Step 5: Solve for x
    x = 139,529,120.32/13,679.07
  6. Step 6: Final answer
    x = 10,200.19

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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.