Home / 21,111.93-29,134.53-11,551.62

Finding the Fourth Proportional to 21,111.93, 29,134.53 and 11,551.62

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Solution

The fourth proportional to 21,111.93, 29,134.53 and 11,551.62 is: 15,941.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,111.93 : 29,134.53 = 11,551.62 : x
  2. Step 2: Convert to fraction form
    21,111.93/29,134.53 = 11,551.62/x
  3. Step 3: Cross multiply
    21,111.93x = 29,134.53 × 11,551.62
  4. Step 4: Simplify right side
    21,111.93x = 336,551,019.44
  5. Step 5: Solve for x
    x = 336,551,019.44/21,111.93
  6. Step 6: Final answer
    x = 15,941.27

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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.