Home / 15,290.37-21,072.14-11,927.85

Finding the Fourth Proportional to 15,290.37, 21,072.14 and 11,927.85

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Solution

The fourth proportional to 15,290.37, 21,072.14 and 11,927.85 is: 16,438.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,290.37 : 21,072.14 = 11,927.85 : x
  2. Step 2: Convert to fraction form
    15,290.37/21,072.14 = 11,927.85/x
  3. Step 3: Cross multiply
    15,290.37x = 21,072.14 × 11,927.85
  4. Step 4: Simplify right side
    15,290.37x = 251,345,265.46
  5. Step 5: Solve for x
    x = 251,345,265.46/15,290.37
  6. Step 6: Final answer
    x = 16,438.14

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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.