Home / 13,868.19-19,135.89-7,899.98

Finding the Fourth Proportional to 13,868.19, 19,135.89 and 7,899.98

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Solution

The fourth proportional to 13,868.19, 19,135.89 and 7,899.98 is: 10,900.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,868.19 : 19,135.89 = 7,899.98 : x
  2. Step 2: Convert to fraction form
    13,868.19/19,135.89 = 7,899.98/x
  3. Step 3: Cross multiply
    13,868.19x = 19,135.89 × 7,899.98
  4. Step 4: Simplify right side
    13,868.19x = 151,173,052.60
  5. Step 5: Solve for x
    x = 151,173,052.60/13,868.19
  6. Step 6: Final answer
    x = 10,900.71

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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.