Home / 20,425.98-28,186.77-11,473.86

Finding the Fourth Proportional to 20,425.98, 28,186.77 and 11,473.86

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Solution

The fourth proportional to 20,425.98, 28,186.77 and 11,473.86 is: 15,833.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,425.98 : 28,186.77 = 11,473.86 : x
  2. Step 2: Convert to fraction form
    20,425.98/28,186.77 = 11,473.86/x
  3. Step 3: Cross multiply
    20,425.98x = 28,186.77 × 11,473.86
  4. Step 4: Simplify right side
    20,425.98x = 323,411,052.83
  5. Step 5: Solve for x
    x = 323,411,052.83/20,425.98
  6. Step 6: Final answer
    x = 15,833.32

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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.