Home / 21,054.32-29,043.18-13,383.44

Finding the Fourth Proportional to 21,054.32, 29,043.18 and 13,383.44

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Solution

The fourth proportional to 21,054.32, 29,043.18 and 13,383.44 is: 18,461.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,054.32 : 29,043.18 = 13,383.44 : x
  2. Step 2: Convert to fraction form
    21,054.32/29,043.18 = 13,383.44/x
  3. Step 3: Cross multiply
    21,054.32x = 29,043.18 × 13,383.44
  4. Step 4: Simplify right side
    21,054.32x = 388,697,511.72
  5. Step 5: Solve for x
    x = 388,697,511.72/21,054.32
  6. Step 6: Final answer
    x = 18,461.66

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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.