Home / 20,914.93-28,852.94-13,357.46

Finding the Fourth Proportional to 20,914.93, 28,852.94 and 13,357.46

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Solution

The fourth proportional to 20,914.93, 28,852.94 and 13,357.46 is: 18,427.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,914.93 : 28,852.94 = 13,357.46 : x
  2. Step 2: Convert to fraction form
    20,914.93/28,852.94 = 13,357.46/x
  3. Step 3: Cross multiply
    20,914.93x = 28,852.94 × 13,357.46
  4. Step 4: Simplify right side
    20,914.93x = 385,401,991.93
  5. Step 5: Solve for x
    x = 385,401,991.93/20,914.93
  6. Step 6: Final answer
    x = 18,427.12

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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.