Home / 13,220.48-18,244.16-7,634.56

Finding the Fourth Proportional to 13,220.48, 18,244.16 and 7,634.56

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Solution

The fourth proportional to 13,220.48, 18,244.16 and 7,634.56 is: 10,535.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.48 : 18,244.16 = 7,634.56 : x
  2. Step 2: Convert to fraction form
    13,220.48/18,244.16 = 7,634.56/x
  3. Step 3: Cross multiply
    13,220.48x = 18,244.16 × 7,634.56
  4. Step 4: Simplify right side
    13,220.48x = 139,286,134.17
  5. Step 5: Solve for x
    x = 139,286,134.17/13,220.48
  6. Step 6: Final answer
    x = 10,535.63

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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.