Home / 13,663.09-18,867.41-8,636.23

Finding the Fourth Proportional to 13,663.09, 18,867.41 and 8,636.23

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Solution

The fourth proportional to 13,663.09, 18,867.41 and 8,636.23 is: 11,925.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,663.09 : 18,867.41 = 8,636.23 : x
  2. Step 2: Convert to fraction form
    13,663.09/18,867.41 = 8,636.23/x
  3. Step 3: Cross multiply
    13,663.09x = 18,867.41 × 8,636.23
  4. Step 4: Simplify right side
    13,663.09x = 162,943,249.08
  5. Step 5: Solve for x
    x = 162,943,249.08/13,663.09
  6. Step 6: Final answer
    x = 11,925.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.