Home / 13,643.36-20,503.56-8,097.74

Finding the Fourth Proportional to 13,643.36, 20,503.56 and 8,097.74

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Solution

The fourth proportional to 13,643.36, 20,503.56 and 8,097.74 is: 12,169.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,643.36 : 20,503.56 = 8,097.74 : x
  2. Step 2: Convert to fraction form
    13,643.36/20,503.56 = 8,097.74/x
  3. Step 3: Cross multiply
    13,643.36x = 20,503.56 × 8,097.74
  4. Step 4: Simplify right side
    13,643.36x = 166,032,497.95
  5. Step 5: Solve for x
    x = 166,032,497.95/13,643.36
  6. Step 6: Final answer
    x = 12,169.47

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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.