Home / 20,897.06-28,837.71-11,465.61

Finding the Fourth Proportional to 20,897.06, 28,837.71 and 11,465.61

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Solution

The fourth proportional to 20,897.06, 28,837.71 and 11,465.61 is: 15,822.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,897.06 : 28,837.71 = 11,465.61 : x
  2. Step 2: Convert to fraction form
    20,897.06/28,837.71 = 11,465.61/x
  3. Step 3: Cross multiply
    20,897.06x = 28,837.71 × 11,465.61
  4. Step 4: Simplify right side
    20,897.06x = 330,641,936.15
  5. Step 5: Solve for x
    x = 330,641,936.15/20,897.06
  6. Step 6: Final answer
    x = 15,822.42

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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.