Home / 13,387.66-18,483.64-8,609.75

Finding the Fourth Proportional to 13,387.66, 18,483.64 and 8,609.75

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Solution

The fourth proportional to 13,387.66, 18,483.64 and 8,609.75 is: 11,887.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,387.66 : 18,483.64 = 8,609.75 : x
  2. Step 2: Convert to fraction form
    13,387.66/18,483.64 = 8,609.75/x
  3. Step 3: Cross multiply
    13,387.66x = 18,483.64 × 8,609.75
  4. Step 4: Simplify right side
    13,387.66x = 159,139,519.49
  5. Step 5: Solve for x
    x = 159,139,519.49/13,387.66
  6. Step 6: Final answer
    x = 11,887.03

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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.