Home / 21,072.48-29,080.89-12,119.99

Finding the Fourth Proportional to 21,072.48, 29,080.89 and 12,119.99

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Solution

The fourth proportional to 21,072.48, 29,080.89 and 12,119.99 is: 16,726.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,072.48 : 29,080.89 = 12,119.99 : x
  2. Step 2: Convert to fraction form
    21,072.48/29,080.89 = 12,119.99/x
  3. Step 3: Cross multiply
    21,072.48x = 29,080.89 × 12,119.99
  4. Step 4: Simplify right side
    21,072.48x = 352,459,950.59
  5. Step 5: Solve for x
    x = 352,459,950.59/21,072.48
  6. Step 6: Final answer
    x = 16,726.08

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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.