Home / 20,491.88-30,703.85-12,462.36

Finding the Fourth Proportional to 20,491.88, 30,703.85 and 12,462.36

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Solution

The fourth proportional to 20,491.88, 30,703.85 and 12,462.36 is: 18,672.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,491.88 : 30,703.85 = 12,462.36 : x
  2. Step 2: Convert to fraction form
    20,491.88/30,703.85 = 12,462.36/x
  3. Step 3: Cross multiply
    20,491.88x = 30,703.85 × 12,462.36
  4. Step 4: Simplify right side
    20,491.88x = 382,642,369.77
  5. Step 5: Solve for x
    x = 382,642,369.77/20,491.88
  6. Step 6: Final answer
    x = 18,672.88

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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.