Home / 21,486.12-29,650.86-12,054.66

Finding the Fourth Proportional to 21,486.12, 29,650.86 and 12,054.66

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Solution

The fourth proportional to 21,486.12, 29,650.86 and 12,054.66 is: 16,635.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,486.12 : 29,650.86 = 12,054.66 : x
  2. Step 2: Convert to fraction form
    21,486.12/29,650.86 = 12,054.66/x
  3. Step 3: Cross multiply
    21,486.12x = 29,650.86 × 12,054.66
  4. Step 4: Simplify right side
    21,486.12x = 357,431,036.01
  5. Step 5: Solve for x
    x = 357,431,036.01/21,486.12
  6. Step 6: Final answer
    x = 16,635.44

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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.