Home / 21,042.04-31,601.82-14,121.40

Finding the Fourth Proportional to 21,042.04, 31,601.82 and 14,121.40

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Solution

The fourth proportional to 21,042.04, 31,601.82 and 14,121.40 is: 21,208.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,042.04 : 31,601.82 = 14,121.40 : x
  2. Step 2: Convert to fraction form
    21,042.04/31,601.82 = 14,121.40/x
  3. Step 3: Cross multiply
    21,042.04x = 31,601.82 × 14,121.40
  4. Step 4: Simplify right side
    21,042.04x = 446,261,940.95
  5. Step 5: Solve for x
    x = 446,261,940.95/21,042.04
  6. Step 6: Final answer
    x = 21,208.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.