Home / 13,905.69-20,724.75-13,684.26

Finding the Fourth Proportional to 13,905.69, 20,724.75 and 13,684.26

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Solution

The fourth proportional to 13,905.69, 20,724.75 and 13,684.26 is: 20,394.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.69 : 20,724.75 = 13,684.26 : x
  2. Step 2: Convert to fraction form
    13,905.69/20,724.75 = 13,684.26/x
  3. Step 3: Cross multiply
    13,905.69x = 20,724.75 × 13,684.26
  4. Step 4: Simplify right side
    13,905.69x = 283,602,867.44
  5. Step 5: Solve for x
    x = 283,602,867.44/13,905.69
  6. Step 6: Final answer
    x = 20,394.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.