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Finding the Fourth Proportional to 13,674.37, 20,495.55 and 6,279.55

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Solution

The fourth proportional to 13,674.37, 20,495.55 and 6,279.55 is: 9,411.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,674.37 : 20,495.55 = 6,279.55 : x
  2. Step 2: Convert to fraction form
    13,674.37/20,495.55 = 6,279.55/x
  3. Step 3: Cross multiply
    13,674.37x = 20,495.55 × 6,279.55
  4. Step 4: Simplify right side
    13,674.37x = 128,702,831.00
  5. Step 5: Solve for x
    x = 128,702,831.00/13,674.37
  6. Step 6: Final answer
    x = 9,411.98

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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.