Home / 20,904.77-28,843.47-11,830.28

Finding the Fourth Proportional to 20,904.77, 28,843.47 and 11,830.28

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Solution

The fourth proportional to 20,904.77, 28,843.47 and 11,830.28 is: 16,322.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.77 : 28,843.47 = 11,830.28 : x
  2. Step 2: Convert to fraction form
    20,904.77/28,843.47 = 11,830.28/x
  3. Step 3: Cross multiply
    20,904.77x = 28,843.47 × 11,830.28
  4. Step 4: Simplify right side
    20,904.77x = 341,226,326.27
  5. Step 5: Solve for x
    x = 341,226,326.27/20,904.77
  6. Step 6: Final answer
    x = 16,322.89

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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.