Home / 21,250.83-29,309.67-13,698.39

Finding the Fourth Proportional to 21,250.83, 29,309.67 and 13,698.39

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Solution

The fourth proportional to 21,250.83, 29,309.67 and 13,698.39 is: 18,893.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,250.83 : 29,309.67 = 13,698.39 : x
  2. Step 2: Convert to fraction form
    21,250.83/29,309.67 = 13,698.39/x
  3. Step 3: Cross multiply
    21,250.83x = 29,309.67 × 13,698.39
  4. Step 4: Simplify right side
    21,250.83x = 401,495,290.43
  5. Step 5: Solve for x
    x = 401,495,290.43/21,250.83
  6. Step 6: Final answer
    x = 18,893.16

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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.