Home / 20,558.39-30,812.94-12,648.26

Finding the Fourth Proportional to 20,558.39, 30,812.94 and 12,648.26

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Solution

The fourth proportional to 20,558.39, 30,812.94 and 12,648.26 is: 18,957.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,558.39 : 30,812.94 = 12,648.26 : x
  2. Step 2: Convert to fraction form
    20,558.39/30,812.94 = 12,648.26/x
  3. Step 3: Cross multiply
    20,558.39x = 30,812.94 × 12,648.26
  4. Step 4: Simplify right side
    20,558.39x = 389,730,153.52
  5. Step 5: Solve for x
    x = 389,730,153.52/20,558.39
  6. Step 6: Final answer
    x = 18,957.24

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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.