Home / 12,219.16-18,219.80-11,261.76

Finding the Fourth Proportional to 12,219.16, 18,219.80 and 11,261.76

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Solution

The fourth proportional to 12,219.16, 18,219.80 and 11,261.76 is: 16,792.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,219.16 : 18,219.80 = 11,261.76 : x
  2. Step 2: Convert to fraction form
    12,219.16/18,219.80 = 11,261.76/x
  3. Step 3: Cross multiply
    12,219.16x = 18,219.80 × 11,261.76
  4. Step 4: Simplify right side
    12,219.16x = 205,187,014.85
  5. Step 5: Solve for x
    x = 205,187,014.85/12,219.16
  6. Step 6: Final answer
    x = 16,792.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.