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Finding the Fourth Proportional to 13,682.63, 20,526.71 and 4,918.25

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Solution

The fourth proportional to 13,682.63, 20,526.71 and 4,918.25 is: 7,378.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,682.63 : 20,526.71 = 4,918.25 : x
  2. Step 2: Convert to fraction form
    13,682.63/20,526.71 = 4,918.25/x
  3. Step 3: Cross multiply
    13,682.63x = 20,526.71 × 4,918.25
  4. Step 4: Simplify right side
    13,682.63x = 100,955,364.23
  5. Step 5: Solve for x
    x = 100,955,364.23/13,682.63
  6. Step 6: Final answer
    x = 7,378.36

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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.