Home / 13,221.63-18,246.57-7,634.43

Finding the Fourth Proportional to 13,221.63, 18,246.57 and 7,634.43

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Solution

The fourth proportional to 13,221.63, 18,246.57 and 7,634.43 is: 10,535.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,221.63 : 18,246.57 = 7,634.43 : x
  2. Step 2: Convert to fraction form
    13,221.63/18,246.57 = 7,634.43/x
  3. Step 3: Cross multiply
    13,221.63x = 18,246.57 × 7,634.43
  4. Step 4: Simplify right side
    13,221.63x = 139,302,161.41
  5. Step 5: Solve for x
    x = 139,302,161.41/13,221.63
  6. Step 6: Final answer
    x = 10,535.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.