Home / 13,050.80-19,561.80-7,211.60

Finding the Fourth Proportional to 13,050.80, 19,561.80 and 7,211.60

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Solution

The fourth proportional to 13,050.80, 19,561.80 and 7,211.60 is: 10,809.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,050.80 : 19,561.80 = 7,211.60 : x
  2. Step 2: Convert to fraction form
    13,050.80/19,561.80 = 7,211.60/x
  3. Step 3: Cross multiply
    13,050.80x = 19,561.80 × 7,211.60
  4. Step 4: Simplify right side
    13,050.80x = 141,071,876.88
  5. Step 5: Solve for x
    x = 141,071,876.88/13,050.80
  6. Step 6: Final answer
    x = 10,809.44

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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.