Home / 21,743.13-30,006.13-12,311.69

Finding the Fourth Proportional to 21,743.13, 30,006.13 and 12,311.69

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Solution

The fourth proportional to 21,743.13, 30,006.13 and 12,311.69 is: 16,990.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,743.13 : 30,006.13 = 12,311.69 : x
  2. Step 2: Convert to fraction form
    21,743.13/30,006.13 = 12,311.69/x
  3. Step 3: Cross multiply
    21,743.13x = 30,006.13 × 12,311.69
  4. Step 4: Simplify right side
    21,743.13x = 369,426,170.66
  5. Step 5: Solve for x
    x = 369,426,170.66/21,743.13
  6. Step 6: Final answer
    x = 16,990.48

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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.