Home / 13,200.75-19,810.31-5,409.63

Finding the Fourth Proportional to 13,200.75, 19,810.31 and 5,409.63

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Solution

The fourth proportional to 13,200.75, 19,810.31 and 5,409.63 is: 8,118.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,200.75 : 19,810.31 = 5,409.63 : x
  2. Step 2: Convert to fraction form
    13,200.75/19,810.31 = 5,409.63/x
  3. Step 3: Cross multiply
    13,200.75x = 19,810.31 × 5,409.63
  4. Step 4: Simplify right side
    13,200.75x = 107,166,420.24
  5. Step 5: Solve for x
    x = 107,166,420.24/13,200.75
  6. Step 6: Final answer
    x = 8,118.21

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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.