Home / 21,380.37-29,504.95-11,948.93

Finding the Fourth Proportional to 21,380.37, 29,504.95 and 11,948.93

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Solution

The fourth proportional to 21,380.37, 29,504.95 and 11,948.93 is: 16,489.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,380.37 : 29,504.95 = 11,948.93 : x
  2. Step 2: Convert to fraction form
    21,380.37/29,504.95 = 11,948.93/x
  3. Step 3: Cross multiply
    21,380.37x = 29,504.95 × 11,948.93
  4. Step 4: Simplify right side
    21,380.37x = 352,552,582.20
  5. Step 5: Solve for x
    x = 352,552,582.20/21,380.37
  6. Step 6: Final answer
    x = 16,489.55

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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.