Home / 12,186.86-18,281.66-4,790.34

Finding the Fourth Proportional to 12,186.86, 18,281.66 and 4,790.34

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Solution

The fourth proportional to 12,186.86, 18,281.66 and 4,790.34 is: 7,186.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,186.86 : 18,281.66 = 4,790.34 : x
  2. Step 2: Convert to fraction form
    12,186.86/18,281.66 = 4,790.34/x
  3. Step 3: Cross multiply
    12,186.86x = 18,281.66 × 4,790.34
  4. Step 4: Simplify right side
    12,186.86x = 87,575,343.21
  5. Step 5: Solve for x
    x = 87,575,343.21/12,186.86
  6. Step 6: Final answer
    x = 7,186.05

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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.