Home / 12,636.89-18,955.41-5,615.25

Finding the Fourth Proportional to 12,636.89, 18,955.41 and 5,615.25

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Solution

The fourth proportional to 12,636.89, 18,955.41 and 5,615.25 is: 8,422.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,636.89 : 18,955.41 = 5,615.25 : x
  2. Step 2: Convert to fraction form
    12,636.89/18,955.41 = 5,615.25/x
  3. Step 3: Cross multiply
    12,636.89x = 18,955.41 × 5,615.25
  4. Step 4: Simplify right side
    12,636.89x = 106,439,366.00
  5. Step 5: Solve for x
    x = 106,439,366.00/12,636.89
  6. Step 6: Final answer
    x = 8,422.91

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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.