Home / 14,015.80-21,033.30-7,775.80

Finding the Fourth Proportional to 14,015.80, 21,033.30 and 7,775.80

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Solution

The fourth proportional to 14,015.80, 21,033.30 and 7,775.80 is: 11,669.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,015.80 : 21,033.30 = 7,775.80 : x
  2. Step 2: Convert to fraction form
    14,015.80/21,033.30 = 7,775.80/x
  3. Step 3: Cross multiply
    14,015.80x = 21,033.30 × 7,775.80
  4. Step 4: Simplify right side
    14,015.80x = 163,550,734.14
  5. Step 5: Solve for x
    x = 163,550,734.14/14,015.80
  6. Step 6: Final answer
    x = 11,669.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.