Home / 11,105.52-15,325.34-6,392.40

Finding the Fourth Proportional to 11,105.52, 15,325.34 and 6,392.40

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Solution

The fourth proportional to 11,105.52, 15,325.34 and 6,392.40 is: 8,821.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,105.52 : 15,325.34 = 6,392.40 : x
  2. Step 2: Convert to fraction form
    11,105.52/15,325.34 = 6,392.40/x
  3. Step 3: Cross multiply
    11,105.52x = 15,325.34 × 6,392.40
  4. Step 4: Simplify right side
    11,105.52x = 97,965,703.42
  5. Step 5: Solve for x
    x = 97,965,703.42/11,105.52
  6. Step 6: Final answer
    x = 8,821.35

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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.