Home / 12,011.86-18,018.04-3,127.54

Finding the Fourth Proportional to 12,011.86, 18,018.04 and 3,127.54

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Solution

The fourth proportional to 12,011.86, 18,018.04 and 3,127.54 is: 4,691.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,011.86 : 18,018.04 = 3,127.54 : x
  2. Step 2: Convert to fraction form
    12,011.86/18,018.04 = 3,127.54/x
  3. Step 3: Cross multiply
    12,011.86x = 18,018.04 × 3,127.54
  4. Step 4: Simplify right side
    12,011.86x = 56,352,140.82
  5. Step 5: Solve for x
    x = 56,352,140.82/12,011.86
  6. Step 6: Final answer
    x = 4,691.38

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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.