Home / 19,165.32-28,745.82-5,126.81

Finding the Fourth Proportional to 19,165.32, 28,745.82 and 5,126.81

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Solution

The fourth proportional to 19,165.32, 28,745.82 and 5,126.81 is: 7,689.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,165.32 : 28,745.82 = 5,126.81 : x
  2. Step 2: Convert to fraction form
    19,165.32/28,745.82 = 5,126.81/x
  3. Step 3: Cross multiply
    19,165.32x = 28,745.82 × 5,126.81
  4. Step 4: Simplify right side
    19,165.32x = 147,374,213.71
  5. Step 5: Solve for x
    x = 147,374,213.71/19,165.32
  6. Step 6: Final answer
    x = 7,689.63

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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.