Home / 14,887.12-20,542.93-8,172.72

Finding the Fourth Proportional to 14,887.12, 20,542.93 and 8,172.72

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Solution

The fourth proportional to 14,887.12, 20,542.93 and 8,172.72 is: 11,277.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,887.12 : 20,542.93 = 8,172.72 : x
  2. Step 2: Convert to fraction form
    14,887.12/20,542.93 = 8,172.72/x
  3. Step 3: Cross multiply
    14,887.12x = 20,542.93 × 8,172.72
  4. Step 4: Simplify right side
    14,887.12x = 167,891,614.87
  5. Step 5: Solve for x
    x = 167,891,614.87/14,887.12
  6. Step 6: Final answer
    x = 11,277.64

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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.