Home / 11,279.46-15,565.44-7,028.40

Finding the Fourth Proportional to 11,279.46, 15,565.44 and 7,028.40

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Solution

The fourth proportional to 11,279.46, 15,565.44 and 7,028.40 is: 9,699.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,279.46 : 15,565.44 = 7,028.40 : x
  2. Step 2: Convert to fraction form
    11,279.46/15,565.44 = 7,028.40/x
  3. Step 3: Cross multiply
    11,279.46x = 15,565.44 × 7,028.40
  4. Step 4: Simplify right side
    11,279.46x = 109,400,138.50
  5. Step 5: Solve for x
    x = 109,400,138.50/11,279.46
  6. Step 6: Final answer
    x = 9,699.06

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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.