Home / 21,697.93-29,942.49-15,317.83

Finding the Fourth Proportional to 21,697.93, 29,942.49 and 15,317.83

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Solution

The fourth proportional to 21,697.93, 29,942.49 and 15,317.83 is: 21,138.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,697.93 : 29,942.49 = 15,317.83 : x
  2. Step 2: Convert to fraction form
    21,697.93/29,942.49 = 15,317.83/x
  3. Step 3: Cross multiply
    21,697.93x = 29,942.49 × 15,317.83
  4. Step 4: Simplify right side
    21,697.93x = 458,653,971.60
  5. Step 5: Solve for x
    x = 458,653,971.60/21,697.93
  6. Step 6: Final answer
    x = 21,138.14

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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.