Home / 13,579.62-18,739.65-7,611.25

Finding the Fourth Proportional to 13,579.62, 18,739.65 and 7,611.25

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Solution

The fourth proportional to 13,579.62, 18,739.65 and 7,611.25 is: 10,503.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.62 : 18,739.65 = 7,611.25 : x
  2. Step 2: Convert to fraction form
    13,579.62/18,739.65 = 7,611.25/x
  3. Step 3: Cross multiply
    13,579.62x = 18,739.65 × 7,611.25
  4. Step 4: Simplify right side
    13,579.62x = 142,632,161.06
  5. Step 5: Solve for x
    x = 142,632,161.06/13,579.62
  6. Step 6: Final answer
    x = 10,503.40

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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.