Home / 20,678.32-31,004.52-13,650.88

Finding the Fourth Proportional to 20,678.32, 31,004.52 and 13,650.88

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Solution

The fourth proportional to 20,678.32, 31,004.52 and 13,650.88 is: 20,467.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,678.32 : 31,004.52 = 13,650.88 : x
  2. Step 2: Convert to fraction form
    20,678.32/31,004.52 = 13,650.88/x
  3. Step 3: Cross multiply
    20,678.32x = 31,004.52 × 13,650.88
  4. Step 4: Simplify right side
    20,678.32x = 423,238,981.98
  5. Step 5: Solve for x
    x = 423,238,981.98/20,678.32
  6. Step 6: Final answer
    x = 20,467.76

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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.