Home / 28,090.80-42,131.34-10,560.78

Finding the Fourth Proportional to 28,090.80, 42,131.34 and 10,560.78

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Solution

The fourth proportional to 28,090.80, 42,131.34 and 10,560.78 is: 15,839.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,090.80 : 42,131.34 = 10,560.78 : x
  2. Step 2: Convert to fraction form
    28,090.80/42,131.34 = 10,560.78/x
  3. Step 3: Cross multiply
    28,090.80x = 42,131.34 × 10,560.78
  4. Step 4: Simplify right side
    28,090.80x = 444,939,812.85
  5. Step 5: Solve for x
    x = 444,939,812.85/28,090.80
  6. Step 6: Final answer
    x = 15,839.34

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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.