Home / 20,934.26-28,889.20-11,374.08

Finding the Fourth Proportional to 20,934.26, 28,889.20 and 11,374.08

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Solution

The fourth proportional to 20,934.26, 28,889.20 and 11,374.08 is: 15,696.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,934.26 : 28,889.20 = 11,374.08 : x
  2. Step 2: Convert to fraction form
    20,934.26/28,889.20 = 11,374.08/x
  3. Step 3: Cross multiply
    20,934.26x = 28,889.20 × 11,374.08
  4. Step 4: Simplify right side
    20,934.26x = 328,588,071.94
  5. Step 5: Solve for x
    x = 328,588,071.94/20,934.26
  6. Step 6: Final answer
    x = 15,696.19

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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.