Home / 21,169.81-31,754.74-5,376.03

Finding the Fourth Proportional to 21,169.81, 31,754.74 and 5,376.03

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Solution

The fourth proportional to 21,169.81, 31,754.74 and 5,376.03 is: 8,064.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,169.81 : 31,754.74 = 5,376.03 : x
  2. Step 2: Convert to fraction form
    21,169.81/31,754.74 = 5,376.03/x
  3. Step 3: Cross multiply
    21,169.81x = 31,754.74 × 5,376.03
  4. Step 4: Simplify right side
    21,169.81x = 170,714,328.62
  5. Step 5: Solve for x
    x = 170,714,328.62/21,169.81
  6. Step 6: Final answer
    x = 8,064.05

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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.