Home / 13,223.63-18,248.60-7,634.63

Finding the Fourth Proportional to 13,223.63, 18,248.60 and 7,634.63

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Solution

The fourth proportional to 13,223.63, 18,248.60 and 7,634.63 is: 10,535.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,223.63 : 18,248.60 = 7,634.63 : x
  2. Step 2: Convert to fraction form
    13,223.63/18,248.60 = 7,634.63/x
  3. Step 3: Cross multiply
    13,223.63x = 18,248.60 × 7,634.63
  4. Step 4: Simplify right side
    13,223.63x = 139,321,236.86
  5. Step 5: Solve for x
    x = 139,321,236.86/13,223.63
  6. Step 6: Final answer
    x = 10,535.78

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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.