Home / 12,018.48-16,566.84-11,785.20

Finding the Fourth Proportional to 12,018.48, 16,566.84 and 11,785.20

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Solution

The fourth proportional to 12,018.48, 16,566.84 and 11,785.20 is: 16,245.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,018.48 : 16,566.84 = 11,785.20 : x
  2. Step 2: Convert to fraction form
    12,018.48/16,566.84 = 11,785.20/x
  3. Step 3: Cross multiply
    12,018.48x = 16,566.84 × 11,785.20
  4. Step 4: Simplify right side
    12,018.48x = 195,243,522.77
  5. Step 5: Solve for x
    x = 195,243,522.77/12,018.48
  6. Step 6: Final answer
    x = 16,245.28

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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.