Home / 21,161.32-29,207.46-13,696.36

Finding the Fourth Proportional to 21,161.32, 29,207.46 and 13,696.36

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Solution

The fourth proportional to 21,161.32, 29,207.46 and 13,696.36 is: 18,904.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,161.32 : 29,207.46 = 13,696.36 : x
  2. Step 2: Convert to fraction form
    21,161.32/29,207.46 = 13,696.36/x
  3. Step 3: Cross multiply
    21,161.32x = 29,207.46 × 13,696.36
  4. Step 4: Simplify right side
    21,161.32x = 400,035,886.85
  5. Step 5: Solve for x
    x = 400,035,886.85/21,161.32
  6. Step 6: Final answer
    x = 18,904.11

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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.