Home / 11,143.08-15,374.34-8,777.88

Finding the Fourth Proportional to 11,143.08, 15,374.34 and 8,777.88

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Solution

The fourth proportional to 11,143.08, 15,374.34 and 8,777.88 is: 12,111.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,143.08 : 15,374.34 = 8,777.88 : x
  2. Step 2: Convert to fraction form
    11,143.08/15,374.34 = 8,777.88/x
  3. Step 3: Cross multiply
    11,143.08x = 15,374.34 × 8,777.88
  4. Step 4: Simplify right side
    11,143.08x = 134,954,111.60
  5. Step 5: Solve for x
    x = 134,954,111.60/11,143.08
  6. Step 6: Final answer
    x = 12,111.02

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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.