Home / 21,827.71-30,124.80-12,267.61

Finding the Fourth Proportional to 21,827.71, 30,124.80 and 12,267.61

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Solution

The fourth proportional to 21,827.71, 30,124.80 and 12,267.61 is: 16,930.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,827.71 : 30,124.80 = 12,267.61 : x
  2. Step 2: Convert to fraction form
    21,827.71/30,124.80 = 12,267.61/x
  3. Step 3: Cross multiply
    21,827.71x = 30,124.80 × 12,267.61
  4. Step 4: Simplify right side
    21,827.71x = 369,559,297.73
  5. Step 5: Solve for x
    x = 369,559,297.73/21,827.71
  6. Step 6: Final answer
    x = 16,930.74

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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.