Home / 21,343.87-29,455.35-11,914.26

Finding the Fourth Proportional to 21,343.87, 29,455.35 and 11,914.26

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Solution

The fourth proportional to 21,343.87, 29,455.35 and 11,914.26 is: 16,442.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,343.87 : 29,455.35 = 11,914.26 : x
  2. Step 2: Convert to fraction form
    21,343.87/29,455.35 = 11,914.26/x
  3. Step 3: Cross multiply
    21,343.87x = 29,455.35 × 11,914.26
  4. Step 4: Simplify right side
    21,343.87x = 350,938,698.29
  5. Step 5: Solve for x
    x = 350,938,698.29/21,343.87
  6. Step 6: Final answer
    x = 16,442.13

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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.