Home / 13,868.40-19,138.44-7,580.88

Finding the Fourth Proportional to 13,868.40, 19,138.44 and 7,580.88

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Solution

The fourth proportional to 13,868.40, 19,138.44 and 7,580.88 is: 10,461.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,868.40 : 19,138.44 = 7,580.88 : x
  2. Step 2: Convert to fraction form
    13,868.40/19,138.44 = 7,580.88/x
  3. Step 3: Cross multiply
    13,868.40x = 19,138.44 × 7,580.88
  4. Step 4: Simplify right side
    13,868.40x = 145,086,217.03
  5. Step 5: Solve for x
    x = 145,086,217.03/13,868.40
  6. Step 6: Final answer
    x = 10,461.64

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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.