Home / 15,427.78-21,292.44-9,458.38

Finding the Fourth Proportional to 15,427.78, 21,292.44 and 9,458.38

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Solution

The fourth proportional to 15,427.78, 21,292.44 and 9,458.38 is: 13,053.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,427.78 : 21,292.44 = 9,458.38 : x
  2. Step 2: Convert to fraction form
    15,427.78/21,292.44 = 9,458.38/x
  3. Step 3: Cross multiply
    15,427.78x = 21,292.44 × 9,458.38
  4. Step 4: Simplify right side
    15,427.78x = 201,391,988.65
  5. Step 5: Solve for x
    x = 201,391,988.65/15,427.78
  6. Step 6: Final answer
    x = 13,053.85

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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.