Home / 12,312.36-16,990.74-6,723

Finding the Fourth Proportional to 12,312.36, 16,990.74 and 6,723

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Solution

The fourth proportional to 12,312.36, 16,990.74 and 6,723 is: 9,277.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,312.36 : 16,990.74 = 6,723 : x
  2. Step 2: Convert to fraction form
    12,312.36/16,990.74 = 6,723/x
  3. Step 3: Cross multiply
    12,312.36x = 16,990.74 × 6,723
  4. Step 4: Simplify right side
    12,312.36x = 114,228,745.02
  5. Step 5: Solve for x
    x = 114,228,745.02/12,312.36
  6. Step 6: Final answer
    x = 9,277.57

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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.