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Finding the Fourth Proportional to 12,378.66, 18,567.99 and 3,018.66

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Solution

The fourth proportional to 12,378.66, 18,567.99 and 3,018.66 is: 4,527.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,378.66 : 18,567.99 = 3,018.66 : x
  2. Step 2: Convert to fraction form
    12,378.66/18,567.99 = 3,018.66/x
  3. Step 3: Cross multiply
    12,378.66x = 18,567.99 × 3,018.66
  4. Step 4: Simplify right side
    12,378.66x = 56,050,448.69
  5. Step 5: Solve for x
    x = 56,050,448.69/12,378.66
  6. Step 6: Final answer
    x = 4,527.99

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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.