Home / 21,242.88-31,841.28-13,852.80

Finding the Fourth Proportional to 21,242.88, 31,841.28 and 13,852.80

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Solution

The fourth proportional to 21,242.88, 31,841.28 and 13,852.80 is: 20,764.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,242.88 : 31,841.28 = 13,852.80 : x
  2. Step 2: Convert to fraction form
    21,242.88/31,841.28 = 13,852.80/x
  3. Step 3: Cross multiply
    21,242.88x = 31,841.28 × 13,852.80
  4. Step 4: Simplify right side
    21,242.88x = 441,090,883.58
  5. Step 5: Solve for x
    x = 441,090,883.58/21,242.88
  6. Step 6: Final answer
    x = 20,764.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.