Home / 30,382.61-45,584.40-12,622.81

Finding the Fourth Proportional to 30,382.61, 45,584.40 and 12,622.81

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Solution

The fourth proportional to 30,382.61, 45,584.40 and 12,622.81 is: 18,938.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,382.61 : 45,584.40 = 12,622.81 : x
  2. Step 2: Convert to fraction form
    30,382.61/45,584.40 = 12,622.81/x
  3. Step 3: Cross multiply
    30,382.61x = 45,584.40 × 12,622.81
  4. Step 4: Simplify right side
    30,382.61x = 575,403,220.16
  5. Step 5: Solve for x
    x = 575,403,220.16/30,382.61
  6. Step 6: Final answer
    x = 18,938.57

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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.