Home / 13,627.75-18,805.36-7,660.32

Finding the Fourth Proportional to 13,627.75, 18,805.36 and 7,660.32

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Solution

The fourth proportional to 13,627.75, 18,805.36 and 7,660.32 is: 10,570.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,627.75 : 18,805.36 = 7,660.32 : x
  2. Step 2: Convert to fraction form
    13,627.75/18,805.36 = 7,660.32/x
  3. Step 3: Cross multiply
    13,627.75x = 18,805.36 × 7,660.32
  4. Step 4: Simplify right side
    13,627.75x = 144,054,981.29
  5. Step 5: Solve for x
    x = 144,054,981.29/13,627.75
  6. Step 6: Final answer
    x = 10,570.71

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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.