Home / 43,508.81-65,263.28-11,919.15

Finding the Fourth Proportional to 43,508.81, 65,263.28 and 11,919.15

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Solution

The fourth proportional to 43,508.81, 65,263.28 and 11,919.15 is: 17,878.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,508.81 : 65,263.28 = 11,919.15 : x
  2. Step 2: Convert to fraction form
    43,508.81/65,263.28 = 11,919.15/x
  3. Step 3: Cross multiply
    43,508.81x = 65,263.28 × 11,919.15
  4. Step 4: Simplify right side
    43,508.81x = 777,882,764.22
  5. Step 5: Solve for x
    x = 777,882,764.22/43,508.81
  6. Step 6: Final answer
    x = 17,878.74

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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.