Home / 20,296.08-28,009.32-11,915.28

Finding the Fourth Proportional to 20,296.08, 28,009.32 and 11,915.28

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Solution

The fourth proportional to 20,296.08, 28,009.32 and 11,915.28 is: 16,443.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,296.08 : 28,009.32 = 11,915.28 : x
  2. Step 2: Convert to fraction form
    20,296.08/28,009.32 = 11,915.28/x
  3. Step 3: Cross multiply
    20,296.08x = 28,009.32 × 11,915.28
  4. Step 4: Simplify right side
    20,296.08x = 333,738,890.41
  5. Step 5: Solve for x
    x = 333,738,890.41/20,296.08
  6. Step 6: Final answer
    x = 16,443.51

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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.