Home / 11,108.07-16,647.74-8,312.81

Finding the Fourth Proportional to 11,108.07, 16,647.74 and 8,312.81

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Solution

The fourth proportional to 11,108.07, 16,647.74 and 8,312.81 is: 12,458.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,108.07 : 16,647.74 = 8,312.81 : x
  2. Step 2: Convert to fraction form
    11,108.07/16,647.74 = 8,312.81/x
  3. Step 3: Cross multiply
    11,108.07x = 16,647.74 × 8,312.81
  4. Step 4: Simplify right side
    11,108.07x = 138,389,405.92
  5. Step 5: Solve for x
    x = 138,389,405.92/11,108.07
  6. Step 6: Final answer
    x = 12,458.46

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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.