Home / 10,380.13-15,570.19-3,454.63

Finding the Fourth Proportional to 10,380.13, 15,570.19 and 3,454.63

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Solution

The fourth proportional to 10,380.13, 15,570.19 and 3,454.63 is: 5,181.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,380.13 : 15,570.19 = 3,454.63 : x
  2. Step 2: Convert to fraction form
    10,380.13/15,570.19 = 3,454.63/x
  3. Step 3: Cross multiply
    10,380.13x = 15,570.19 × 3,454.63
  4. Step 4: Simplify right side
    10,380.13x = 53,789,245.48
  5. Step 5: Solve for x
    x = 53,789,245.48/10,380.13
  6. Step 6: Final answer
    x = 5,181.94

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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.