Home / 21,741.12-30,002.88-11,805.12

Finding the Fourth Proportional to 21,741.12, 30,002.88 and 11,805.12

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Solution

The fourth proportional to 21,741.12, 30,002.88 and 11,805.12 is: 16,291.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,741.12 : 30,002.88 = 11,805.12 : x
  2. Step 2: Convert to fraction form
    21,741.12/30,002.88 = 11,805.12/x
  3. Step 3: Cross multiply
    21,741.12x = 30,002.88 × 11,805.12
  4. Step 4: Simplify right side
    21,741.12x = 354,187,598.75
  5. Step 5: Solve for x
    x = 354,187,598.75/21,741.12
  6. Step 6: Final answer
    x = 16,291.14

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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.