Home / 11,398.98-15,728.58-6,921.84

Finding the Fourth Proportional to 11,398.98, 15,728.58 and 6,921.84

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Solution

The fourth proportional to 11,398.98, 15,728.58 and 6,921.84 is: 9,550.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,398.98 : 15,728.58 = 6,921.84 : x
  2. Step 2: Convert to fraction form
    11,398.98/15,728.58 = 6,921.84/x
  3. Step 3: Cross multiply
    11,398.98x = 15,728.58 × 6,921.84
  4. Step 4: Simplify right side
    11,398.98x = 108,870,714.19
  5. Step 5: Solve for x
    x = 108,870,714.19/11,398.98
  6. Step 6: Final answer
    x = 9,550.92

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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.