Home / 21,156.51-29,196.01-11,725.08

Finding the Fourth Proportional to 21,156.51, 29,196.01 and 11,725.08

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Solution

The fourth proportional to 21,156.51, 29,196.01 and 11,725.08 is: 16,180.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,156.51 : 29,196.01 = 11,725.08 : x
  2. Step 2: Convert to fraction form
    21,156.51/29,196.01 = 11,725.08/x
  3. Step 3: Cross multiply
    21,156.51x = 29,196.01 × 11,725.08
  4. Step 4: Simplify right side
    21,156.51x = 342,325,523.62
  5. Step 5: Solve for x
    x = 342,325,523.62/21,156.51
  6. Step 6: Final answer
    x = 16,180.62

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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.