Home / 12,020.58-16,500.11-10,664.64

Finding the Fourth Proportional to 12,020.58, 16,500.11 and 10,664.64

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Solution

The fourth proportional to 12,020.58, 16,500.11 and 10,664.64 is: 14,638.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,020.58 : 16,500.11 = 10,664.64 : x
  2. Step 2: Convert to fraction form
    12,020.58/16,500.11 = 10,664.64/x
  3. Step 3: Cross multiply
    12,020.58x = 16,500.11 × 10,664.64
  4. Step 4: Simplify right side
    12,020.58x = 175,967,679.79
  5. Step 5: Solve for x
    x = 175,967,679.79/12,020.58
  6. Step 6: Final answer
    x = 14,638.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.