Home / 21,645.03-29,869.99-12,084.36

Finding the Fourth Proportional to 21,645.03, 29,869.99 and 12,084.36

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Solution

The fourth proportional to 21,645.03, 29,869.99 and 12,084.36 is: 16,676.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,645.03 : 29,869.99 = 12,084.36 : x
  2. Step 2: Convert to fraction form
    21,645.03/29,869.99 = 12,084.36/x
  3. Step 3: Cross multiply
    21,645.03x = 29,869.99 × 12,084.36
  4. Step 4: Simplify right side
    21,645.03x = 360,959,502.58
  5. Step 5: Solve for x
    x = 360,959,502.58/21,645.03
  6. Step 6: Final answer
    x = 16,676.32

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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.