Home / 21,095.21-29,111.42-11,535.14

Finding the Fourth Proportional to 21,095.21, 29,111.42 and 11,535.14

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Solution

The fourth proportional to 21,095.21, 29,111.42 and 11,535.14 is: 15,918.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,095.21 : 29,111.42 = 11,535.14 : x
  2. Step 2: Convert to fraction form
    21,095.21/29,111.42 = 11,535.14/x
  3. Step 3: Cross multiply
    21,095.21x = 29,111.42 × 11,535.14
  4. Step 4: Simplify right side
    21,095.21x = 335,804,406.92
  5. Step 5: Solve for x
    x = 335,804,406.92/21,095.21
  6. Step 6: Final answer
    x = 15,918.51

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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.