Home / 21,480.03-29,640.45-12,046.77

Finding the Fourth Proportional to 21,480.03, 29,640.45 and 12,046.77

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Solution

The fourth proportional to 21,480.03, 29,640.45 and 12,046.77 is: 16,623.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,480.03 : 29,640.45 = 12,046.77 : x
  2. Step 2: Convert to fraction form
    21,480.03/29,640.45 = 12,046.77/x
  3. Step 3: Cross multiply
    21,480.03x = 29,640.45 × 12,046.77
  4. Step 4: Simplify right side
    21,480.03x = 357,071,683.85
  5. Step 5: Solve for x
    x = 357,071,683.85/21,480.03
  6. Step 6: Final answer
    x = 16,623.43

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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.