Home / 12,020.47-16,660.96-11,328.32

Finding the Fourth Proportional to 12,020.47, 16,660.96 and 11,328.32

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Solution

The fourth proportional to 12,020.47, 16,660.96 and 11,328.32 is: 15,701.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,020.47 : 16,660.96 = 11,328.32 : x
  2. Step 2: Convert to fraction form
    12,020.47/16,660.96 = 11,328.32/x
  3. Step 3: Cross multiply
    12,020.47x = 16,660.96 × 11,328.32
  4. Step 4: Simplify right side
    12,020.47x = 188,740,699.72
  5. Step 5: Solve for x
    x = 188,740,699.72/12,020.47
  6. Step 6: Final answer
    x = 15,701.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.