Home / 21,482.31-29,645.70-11,921.58

Finding the Fourth Proportional to 21,482.31, 29,645.70 and 11,921.58

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Solution

The fourth proportional to 21,482.31, 29,645.70 and 11,921.58 is: 16,451.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,482.31 : 29,645.70 = 11,921.58 : x
  2. Step 2: Convert to fraction form
    21,482.31/29,645.70 = 11,921.58/x
  3. Step 3: Cross multiply
    21,482.31x = 29,645.70 × 11,921.58
  4. Step 4: Simplify right side
    21,482.31x = 353,423,539.50
  5. Step 5: Solve for x
    x = 353,423,539.50/21,482.31
  6. Step 6: Final answer
    x = 16,451.84

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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.