Home / 13,756.36-18,984.06-7,788.03

Finding the Fourth Proportional to 13,756.36, 18,984.06 and 7,788.03

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Solution

The fourth proportional to 13,756.36, 18,984.06 and 7,788.03 is: 10,747.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,756.36 : 18,984.06 = 7,788.03 : x
  2. Step 2: Convert to fraction form
    13,756.36/18,984.06 = 7,788.03/x
  3. Step 3: Cross multiply
    13,756.36x = 18,984.06 × 7,788.03
  4. Step 4: Simplify right side
    13,756.36x = 147,848,428.80
  5. Step 5: Solve for x
    x = 147,848,428.80/13,756.36
  6. Step 6: Final answer
    x = 10,747.64

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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.