Home / 11,078.22-15,288.30-6,362.40

Finding the Fourth Proportional to 11,078.22, 15,288.30 and 6,362.40

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Solution

The fourth proportional to 11,078.22, 15,288.30 and 6,362.40 is: 8,780.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,078.22 : 15,288.30 = 6,362.40 : x
  2. Step 2: Convert to fraction form
    11,078.22/15,288.30 = 6,362.40/x
  3. Step 3: Cross multiply
    11,078.22x = 15,288.30 × 6,362.40
  4. Step 4: Simplify right side
    11,078.22x = 97,270,279.92
  5. Step 5: Solve for x
    x = 97,270,279.92/11,078.22
  6. Step 6: Final answer
    x = 8,780.32

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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.