Home / 11,153.55-15,392.63-8,129.36

Finding the Fourth Proportional to 11,153.55, 15,392.63 and 8,129.36

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Solution

The fourth proportional to 11,153.55, 15,392.63 and 8,129.36 is: 11,219.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,153.55 : 15,392.63 = 8,129.36 : x
  2. Step 2: Convert to fraction form
    11,153.55/15,392.63 = 8,129.36/x
  3. Step 3: Cross multiply
    11,153.55x = 15,392.63 × 8,129.36
  4. Step 4: Simplify right side
    11,153.55x = 125,132,289.42
  5. Step 5: Solve for x
    x = 125,132,289.42/11,153.55
  6. Step 6: Final answer
    x = 11,219.06

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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.