Home / 21,740.88-30,002.89-12,181.47

Finding the Fourth Proportional to 21,740.88, 30,002.89 and 12,181.47

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Solution

The fourth proportional to 21,740.88, 30,002.89 and 12,181.47 is: 16,810.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,740.88 : 30,002.89 = 12,181.47 : x
  2. Step 2: Convert to fraction form
    21,740.88/30,002.89 = 12,181.47/x
  3. Step 3: Cross multiply
    21,740.88x = 30,002.89 × 12,181.47
  4. Step 4: Simplify right side
    21,740.88x = 365,479,304.45
  5. Step 5: Solve for x
    x = 365,479,304.45/21,740.88
  6. Step 6: Final answer
    x = 16,810.70

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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.