Home / 21,111.53-29,133.93-11,552.31

Finding the Fourth Proportional to 21,111.53, 29,133.93 and 11,552.31

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Solution

The fourth proportional to 21,111.53, 29,133.93 and 11,552.31 is: 15,942.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,111.53 : 29,133.93 = 11,552.31 : x
  2. Step 2: Convert to fraction form
    21,111.53/29,133.93 = 11,552.31/x
  3. Step 3: Cross multiply
    21,111.53x = 29,133.93 × 11,552.31
  4. Step 4: Simplify right side
    21,111.53x = 336,564,190.88
  5. Step 5: Solve for x
    x = 336,564,190.88/21,111.53
  6. Step 6: Final answer
    x = 15,942.20

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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.