Home / 13,824.24-20,724.90-5,386.56

Finding the Fourth Proportional to 13,824.24, 20,724.90 and 5,386.56

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Solution

The fourth proportional to 13,824.24, 20,724.90 and 5,386.56 is: 8,075.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,824.24 : 20,724.90 = 5,386.56 : x
  2. Step 2: Convert to fraction form
    13,824.24/20,724.90 = 5,386.56/x
  3. Step 3: Cross multiply
    13,824.24x = 20,724.90 × 5,386.56
  4. Step 4: Simplify right side
    13,824.24x = 111,635,917.34
  5. Step 5: Solve for x
    x = 111,635,917.34/13,824.24
  6. Step 6: Final answer
    x = 8,075.37

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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.