Home / 21,836.81-30,134.61-12,276.74

Finding the Fourth Proportional to 21,836.81, 30,134.61 and 12,276.74

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Solution

The fourth proportional to 21,836.81, 30,134.61 and 12,276.74 is: 16,941.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,836.81 : 30,134.61 = 12,276.74 : x
  2. Step 2: Convert to fraction form
    21,836.81/30,134.61 = 12,276.74/x
  3. Step 3: Cross multiply
    21,836.81x = 30,134.61 × 12,276.74
  4. Step 4: Simplify right side
    21,836.81x = 369,954,651.99
  5. Step 5: Solve for x
    x = 369,954,651.99/21,836.81
  6. Step 6: Final answer
    x = 16,941.79

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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.