Home / 21,772.18-30,044.08-12,211.35

Finding the Fourth Proportional to 21,772.18, 30,044.08 and 12,211.35

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Solution

The fourth proportional to 21,772.18, 30,044.08 and 12,211.35 is: 16,850.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,772.18 : 30,044.08 = 12,211.35 : x
  2. Step 2: Convert to fraction form
    21,772.18/30,044.08 = 12,211.35/x
  3. Step 3: Cross multiply
    21,772.18x = 30,044.08 × 12,211.35
  4. Step 4: Simplify right side
    21,772.18x = 366,878,776.31
  5. Step 5: Solve for x
    x = 366,878,776.31/21,772.18
  6. Step 6: Final answer
    x = 16,850.81

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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.