Home / 11,181.56-15,430.23-6,145.78

Finding the Fourth Proportional to 11,181.56, 15,430.23 and 6,145.78

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Solution

The fourth proportional to 11,181.56, 15,430.23 and 6,145.78 is: 8,481.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,181.56 : 15,430.23 = 6,145.78 : x
  2. Step 2: Convert to fraction form
    11,181.56/15,430.23 = 6,145.78/x
  3. Step 3: Cross multiply
    11,181.56x = 15,430.23 × 6,145.78
  4. Step 4: Simplify right side
    11,181.56x = 94,830,818.22
  5. Step 5: Solve for x
    x = 94,830,818.22/11,181.56
  6. Step 6: Final answer
    x = 8,481.00

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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.