Home / 20,331.63-30,497.04-8,491.77

Finding the Fourth Proportional to 20,331.63, 30,497.04 and 8,491.77

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Solution

The fourth proportional to 20,331.63, 30,497.04 and 8,491.77 is: 12,737.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,331.63 : 30,497.04 = 8,491.77 : x
  2. Step 2: Convert to fraction form
    20,331.63/30,497.04 = 8,491.77/x
  3. Step 3: Cross multiply
    20,331.63x = 30,497.04 × 8,491.77
  4. Step 4: Simplify right side
    20,331.63x = 258,973,849.36
  5. Step 5: Solve for x
    x = 258,973,849.36/20,331.63
  6. Step 6: Final answer
    x = 12,737.49

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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.