Home / 13,821.21-20,735.46-10,040.40

Finding the Fourth Proportional to 13,821.21, 20,735.46 and 10,040.40

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Solution

The fourth proportional to 13,821.21, 20,735.46 and 10,040.40 is: 15,063.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821.21 : 20,735.46 = 10,040.40 : x
  2. Step 2: Convert to fraction form
    13,821.21/20,735.46 = 10,040.40/x
  3. Step 3: Cross multiply
    13,821.21x = 20,735.46 × 10,040.40
  4. Step 4: Simplify right side
    13,821.21x = 208,192,312.58
  5. Step 5: Solve for x
    x = 208,192,312.58/13,821.21
  6. Step 6: Final answer
    x = 15,063.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.