Home / 13,912.18-20,881.93-10,203.84

Finding the Fourth Proportional to 13,912.18, 20,881.93 and 10,203.84

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Solution

The fourth proportional to 13,912.18, 20,881.93 and 10,203.84 is: 15,315.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,912.18 : 20,881.93 = 10,203.84 : x
  2. Step 2: Convert to fraction form
    13,912.18/20,881.93 = 10,203.84/x
  3. Step 3: Cross multiply
    13,912.18x = 20,881.93 × 10,203.84
  4. Step 4: Simplify right side
    13,912.18x = 213,075,872.61
  5. Step 5: Solve for x
    x = 213,075,872.61/13,912.18
  6. Step 6: Final answer
    x = 15,315.78

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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.