Home / 21,836.24-30,137.19-12,276.90

Finding the Fourth Proportional to 21,836.24, 30,137.19 and 12,276.90

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Solution

The fourth proportional to 21,836.24, 30,137.19 and 12,276.90 is: 16,943.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,836.24 : 30,137.19 = 12,276.90 : x
  2. Step 2: Convert to fraction form
    21,836.24/30,137.19 = 12,276.90/x
  3. Step 3: Cross multiply
    21,836.24x = 30,137.19 × 12,276.90
  4. Step 4: Simplify right side
    21,836.24x = 369,991,267.91
  5. Step 5: Solve for x
    x = 369,991,267.91/21,836.24
  6. Step 6: Final answer
    x = 16,943.91

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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.