Home / 13,021.74-19,530.75-4,255.50

Finding the Fourth Proportional to 13,021.74, 19,530.75 and 4,255.50

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Solution

The fourth proportional to 13,021.74, 19,530.75 and 4,255.50 is: 6,382.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,021.74 : 19,530.75 = 4,255.50 : x
  2. Step 2: Convert to fraction form
    13,021.74/19,530.75 = 4,255.50/x
  3. Step 3: Cross multiply
    13,021.74x = 19,530.75 × 4,255.50
  4. Step 4: Simplify right side
    13,021.74x = 83,113,106.63
  5. Step 5: Solve for x
    x = 83,113,106.63/13,021.74
  6. Step 6: Final answer
    x = 6,382.64

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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.