Home / 14,709.72-20,300.64-8,422.56

Finding the Fourth Proportional to 14,709.72, 20,300.64 and 8,422.56

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Solution

The fourth proportional to 14,709.72, 20,300.64 and 8,422.56 is: 11,623.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,709.72 : 20,300.64 = 8,422.56 : x
  2. Step 2: Convert to fraction form
    14,709.72/20,300.64 = 8,422.56/x
  3. Step 3: Cross multiply
    14,709.72x = 20,300.64 × 8,422.56
  4. Step 4: Simplify right side
    14,709.72x = 170,983,358.44
  5. Step 5: Solve for x
    x = 170,983,358.44/14,709.72
  6. Step 6: Final answer
    x = 11,623.84

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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.