Home / 14,009.32-21,013.74-3,620.68

Finding the Fourth Proportional to 14,009.32, 21,013.74 and 3,620.68

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Solution

The fourth proportional to 14,009.32, 21,013.74 and 3,620.68 is: 5,430.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,009.32 : 21,013.74 = 3,620.68 : x
  2. Step 2: Convert to fraction form
    14,009.32/21,013.74 = 3,620.68/x
  3. Step 3: Cross multiply
    14,009.32x = 21,013.74 × 3,620.68
  4. Step 4: Simplify right side
    14,009.32x = 76,084,028.14
  5. Step 5: Solve for x
    x = 76,084,028.14/14,009.32
  6. Step 6: Final answer
    x = 5,430.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.