Home / 15,201.41-20,971.92-10,157.64

Finding the Fourth Proportional to 15,201.41, 20,971.92 and 10,157.64

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Solution

The fourth proportional to 15,201.41, 20,971.92 and 10,157.64 is: 14,013.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,201.41 : 20,971.92 = 10,157.64 : x
  2. Step 2: Convert to fraction form
    15,201.41/20,971.92 = 10,157.64/x
  3. Step 3: Cross multiply
    15,201.41x = 20,971.92 × 10,157.64
  4. Step 4: Simplify right side
    15,201.41x = 213,025,273.07
  5. Step 5: Solve for x
    x = 213,025,273.07/15,201.41
  6. Step 6: Final answer
    x = 14,013.52

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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.