Home / 21,189.96-29,243.52-12,240.18

Finding the Fourth Proportional to 21,189.96, 29,243.52 and 12,240.18

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Solution

The fourth proportional to 21,189.96, 29,243.52 and 12,240.18 is: 16,892.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,189.96 : 29,243.52 = 12,240.18 : x
  2. Step 2: Convert to fraction form
    21,189.96/29,243.52 = 12,240.18/x
  3. Step 3: Cross multiply
    21,189.96x = 29,243.52 × 12,240.18
  4. Step 4: Simplify right side
    21,189.96x = 357,945,948.63
  5. Step 5: Solve for x
    x = 357,945,948.63/21,189.96
  6. Step 6: Final answer
    x = 16,892.24

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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.