Home / 13,770.55-19,003.31-7,803.36

Finding the Fourth Proportional to 13,770.55, 19,003.31 and 7,803.36

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Solution

The fourth proportional to 13,770.55, 19,003.31 and 7,803.36 is: 10,768.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,770.55 : 19,003.31 = 7,803.36 : x
  2. Step 2: Convert to fraction form
    13,770.55/19,003.31 = 7,803.36/x
  3. Step 3: Cross multiply
    13,770.55x = 19,003.31 × 7,803.36
  4. Step 4: Simplify right side
    13,770.55x = 148,289,649.61
  5. Step 5: Solve for x
    x = 148,289,649.61/13,770.55
  6. Step 6: Final answer
    x = 10,768.61

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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.