Home / 12,485.18-17,221.20-9,076.46

Finding the Fourth Proportional to 12,485.18, 17,221.20 and 9,076.46

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Solution

The fourth proportional to 12,485.18, 17,221.20 and 9,076.46 is: 12,519.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,485.18 : 17,221.20 = 9,076.46 : x
  2. Step 2: Convert to fraction form
    12,485.18/17,221.20 = 9,076.46/x
  3. Step 3: Cross multiply
    12,485.18x = 17,221.20 × 9,076.46
  4. Step 4: Simplify right side
    12,485.18x = 156,307,532.95
  5. Step 5: Solve for x
    x = 156,307,532.95/12,485.18
  6. Step 6: Final answer
    x = 12,519.45

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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.