Home / 21,051.38-29,051.51-11,620.55

Finding the Fourth Proportional to 21,051.38, 29,051.51 and 11,620.55

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Solution

The fourth proportional to 21,051.38, 29,051.51 and 11,620.55 is: 16,036.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,051.38 : 29,051.51 = 11,620.55 : x
  2. Step 2: Convert to fraction form
    21,051.38/29,051.51 = 11,620.55/x
  3. Step 3: Cross multiply
    21,051.38x = 29,051.51 × 11,620.55
  4. Step 4: Simplify right side
    21,051.38x = 337,594,321.17
  5. Step 5: Solve for x
    x = 337,594,321.17/21,051.38
  6. Step 6: Final answer
    x = 16,036.69

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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.