Home / 21,390.24-29,514.72-11,958.88

Finding the Fourth Proportional to 21,390.24, 29,514.72 and 11,958.88

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Solution

The fourth proportional to 21,390.24, 29,514.72 and 11,958.88 is: 16,501.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,390.24 : 29,514.72 = 11,958.88 : x
  2. Step 2: Convert to fraction form
    21,390.24/29,514.72 = 11,958.88/x
  3. Step 3: Cross multiply
    21,390.24x = 29,514.72 × 11,958.88
  4. Step 4: Simplify right side
    21,390.24x = 352,962,994.71
  5. Step 5: Solve for x
    x = 352,962,994.71/21,390.24
  6. Step 6: Final answer
    x = 16,501.12

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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.