Home / 20,934.77-28,891.59-11,985.08

Finding the Fourth Proportional to 20,934.77, 28,891.59 and 11,985.08

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Solution

The fourth proportional to 20,934.77, 28,891.59 and 11,985.08 is: 16,540.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,934.77 : 28,891.59 = 11,985.08 : x
  2. Step 2: Convert to fraction form
    20,934.77/28,891.59 = 11,985.08/x
  3. Step 3: Cross multiply
    20,934.77x = 28,891.59 × 11,985.08
  4. Step 4: Simplify right side
    20,934.77x = 346,268,017.48
  5. Step 5: Solve for x
    x = 346,268,017.48/20,934.77
  6. Step 6: Final answer
    x = 16,540.33

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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.