Home / 20,893.23-28,828.55-12,393.77

Finding the Fourth Proportional to 20,893.23, 28,828.55 and 12,393.77

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Solution

The fourth proportional to 20,893.23, 28,828.55 and 12,393.77 is: 17,100.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,893.23 : 28,828.55 = 12,393.77 : x
  2. Step 2: Convert to fraction form
    20,893.23/28,828.55 = 12,393.77/x
  3. Step 3: Cross multiply
    20,893.23x = 28,828.55 × 12,393.77
  4. Step 4: Simplify right side
    20,893.23x = 357,294,212.02
  5. Step 5: Solve for x
    x = 357,294,212.02/20,893.23
  6. Step 6: Final answer
    x = 17,100.96

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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.