Home / 31,986.63-47,966.04-16,990.45

Finding the Fourth Proportional to 31,986.63, 47,966.04 and 16,990.45

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Solution

The fourth proportional to 31,986.63, 47,966.04 and 16,990.45 is: 25,478.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,986.63 : 47,966.04 = 16,990.45 : x
  2. Step 2: Convert to fraction form
    31,986.63/47,966.04 = 16,990.45/x
  3. Step 3: Cross multiply
    31,986.63x = 47,966.04 × 16,990.45
  4. Step 4: Simplify right side
    31,986.63x = 814,964,604.32
  5. Step 5: Solve for x
    x = 814,964,604.32/31,986.63
  6. Step 6: Final answer
    x = 25,478.29

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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.