Home / 28,036.16-38,696.64-16,856

Finding the Fourth Proportional to 28,036.16, 38,696.64 and 16,856

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Solution

The fourth proportional to 28,036.16, 38,696.64 and 16,856 is: 23,265.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,036.16 : 38,696.64 = 16,856 : x
  2. Step 2: Convert to fraction form
    28,036.16/38,696.64 = 16,856/x
  3. Step 3: Cross multiply
    28,036.16x = 38,696.64 × 16,856
  4. Step 4: Simplify right side
    28,036.16x = 652,270,563.84
  5. Step 5: Solve for x
    x = 652,270,563.84/28,036.16
  6. Step 6: Final answer
    x = 23,265.33

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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.