Home / 11,424.45-15,765.65-6,388.68

Finding the Fourth Proportional to 11,424.45, 15,765.65 and 6,388.68

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Solution

The fourth proportional to 11,424.45, 15,765.65 and 6,388.68 is: 8,816.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,424.45 : 15,765.65 = 6,388.68 : x
  2. Step 2: Convert to fraction form
    11,424.45/15,765.65 = 6,388.68/x
  3. Step 3: Cross multiply
    11,424.45x = 15,765.65 × 6,388.68
  4. Step 4: Simplify right side
    11,424.45x = 100,721,582.07
  5. Step 5: Solve for x
    x = 100,721,582.07/11,424.45
  6. Step 6: Final answer
    x = 8,816.32

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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.