Home / 21,834.27-30,129.30-12,271.95

Finding the Fourth Proportional to 21,834.27, 30,129.30 and 12,271.95

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Solution

The fourth proportional to 21,834.27, 30,129.30 and 12,271.95 is: 16,934.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,834.27 : 30,129.30 = 12,271.95 : x
  2. Step 2: Convert to fraction form
    21,834.27/30,129.30 = 12,271.95/x
  3. Step 3: Cross multiply
    21,834.27x = 30,129.30 × 12,271.95
  4. Step 4: Simplify right side
    21,834.27x = 369,745,263.14
  5. Step 5: Solve for x
    x = 369,745,263.14/21,834.27
  6. Step 6: Final answer
    x = 16,934.17

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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.