Home / 13,249.47-18,279.03-8,536.50

Finding the Fourth Proportional to 13,249.47, 18,279.03 and 8,536.50

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Solution

The fourth proportional to 13,249.47, 18,279.03 and 8,536.50 is: 11,776.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,249.47 : 18,279.03 = 8,536.50 : x
  2. Step 2: Convert to fraction form
    13,249.47/18,279.03 = 8,536.50/x
  3. Step 3: Cross multiply
    13,249.47x = 18,279.03 × 8,536.50
  4. Step 4: Simplify right side
    13,249.47x = 156,038,939.60
  5. Step 5: Solve for x
    x = 156,038,939.60/13,249.47
  6. Step 6: Final answer
    x = 11,776.99

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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.