Home / 15,170.96-20,935.86-10,142.48

Finding the Fourth Proportional to 15,170.96, 20,935.86 and 10,142.48

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Solution

The fourth proportional to 15,170.96, 20,935.86 and 10,142.48 is: 13,996.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,170.96 : 20,935.86 = 10,142.48 : x
  2. Step 2: Convert to fraction form
    15,170.96/20,935.86 = 10,142.48/x
  3. Step 3: Cross multiply
    15,170.96x = 20,935.86 × 10,142.48
  4. Step 4: Simplify right side
    15,170.96x = 212,341,541.33
  5. Step 5: Solve for x
    x = 212,341,541.33/15,170.96
  6. Step 6: Final answer
    x = 13,996.58

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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.