Home / 12,030.81-18,045.41-4,238.61

Finding the Fourth Proportional to 12,030.81, 18,045.41 and 4,238.61

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Solution

The fourth proportional to 12,030.81, 18,045.41 and 4,238.61 is: 6,357.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,030.81 : 18,045.41 = 4,238.61 : x
  2. Step 2: Convert to fraction form
    12,030.81/18,045.41 = 4,238.61/x
  3. Step 3: Cross multiply
    12,030.81x = 18,045.41 × 4,238.61
  4. Step 4: Simplify right side
    12,030.81x = 76,487,434.09
  5. Step 5: Solve for x
    x = 76,487,434.09/12,030.81
  6. Step 6: Final answer
    x = 6,357.63

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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.