Home / 12,638.25-18,827.66-12,069.63

Finding the Fourth Proportional to 12,638.25, 18,827.66 and 12,069.63

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Solution

The fourth proportional to 12,638.25, 18,827.66 and 12,069.63 is: 17,980.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,638.25 : 18,827.66 = 12,069.63 : x
  2. Step 2: Convert to fraction form
    12,638.25/18,827.66 = 12,069.63/x
  3. Step 3: Cross multiply
    12,638.25x = 18,827.66 × 12,069.63
  4. Step 4: Simplify right side
    12,638.25x = 227,242,889.97
  5. Step 5: Solve for x
    x = 227,242,889.97/12,638.25
  6. Step 6: Final answer
    x = 17,980.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.