Home / 14,887.20-20,544.28-8,172.68

Finding the Fourth Proportional to 14,887.20, 20,544.28 and 8,172.68

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Solution

The fourth proportional to 14,887.20, 20,544.28 and 8,172.68 is: 11,278.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,887.20 : 20,544.28 = 8,172.68 : x
  2. Step 2: Convert to fraction form
    14,887.20/20,544.28 = 8,172.68/x
  3. Step 3: Cross multiply
    14,887.20x = 20,544.28 × 8,172.68
  4. Step 4: Simplify right side
    14,887.20x = 167,901,826.27
  5. Step 5: Solve for x
    x = 167,901,826.27/14,887.20
  6. Step 6: Final answer
    x = 11,278.27

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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.