Home / 21,051.92-29,051.40-11,620.28

Finding the Fourth Proportional to 21,051.92, 29,051.40 and 11,620.28

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Solution

The fourth proportional to 21,051.92, 29,051.40 and 11,620.28 is: 16,035.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,051.92 : 29,051.40 = 11,620.28 : x
  2. Step 2: Convert to fraction form
    21,051.92/29,051.40 = 11,620.28/x
  3. Step 3: Cross multiply
    21,051.92x = 29,051.40 × 11,620.28
  4. Step 4: Simplify right side
    21,051.92x = 337,585,402.39
  5. Step 5: Solve for x
    x = 337,585,402.39/21,051.92
  6. Step 6: Final answer
    x = 16,035.85

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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.