Home / 20,313.16-28,033.50-12,355.72

Finding the Fourth Proportional to 20,313.16, 28,033.50 and 12,355.72

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Solution

The fourth proportional to 20,313.16, 28,033.50 and 12,355.72 is: 17,051.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,313.16 : 28,033.50 = 12,355.72 : x
  2. Step 2: Convert to fraction form
    20,313.16/28,033.50 = 12,355.72/x
  3. Step 3: Cross multiply
    20,313.16x = 28,033.50 × 12,355.72
  4. Step 4: Simplify right side
    20,313.16x = 346,374,076.62
  5. Step 5: Solve for x
    x = 346,374,076.62/20,313.16
  6. Step 6: Final answer
    x = 17,051.71

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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.