Home / 21,548.13-29,736.12-12,116.71

Finding the Fourth Proportional to 21,548.13, 29,736.12 and 12,116.71

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Solution

The fourth proportional to 21,548.13, 29,736.12 and 12,116.71 is: 16,720.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,548.13 : 29,736.12 = 12,116.71 : x
  2. Step 2: Convert to fraction form
    21,548.13/29,736.12 = 12,116.71/x
  3. Step 3: Cross multiply
    21,548.13x = 29,736.12 × 12,116.71
  4. Step 4: Simplify right side
    21,548.13x = 360,303,942.57
  5. Step 5: Solve for x
    x = 360,303,942.57/21,548.13
  6. Step 6: Final answer
    x = 16,720.89

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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.