Home / 15,203.41-20,984.21-8,917.81

Finding the Fourth Proportional to 15,203.41, 20,984.21 and 8,917.81

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Solution

The fourth proportional to 15,203.41, 20,984.21 and 8,917.81 is: 12,308.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,203.41 : 20,984.21 = 8,917.81 : x
  2. Step 2: Convert to fraction form
    15,203.41/20,984.21 = 8,917.81/x
  3. Step 3: Cross multiply
    15,203.41x = 20,984.21 × 8,917.81
  4. Step 4: Simplify right side
    15,203.41x = 187,133,197.78
  5. Step 5: Solve for x
    x = 187,133,197.78/15,203.41
  6. Step 6: Final answer
    x = 12,308.63

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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.