Home / 18,885.90-28,327.17-6,405.63

Finding the Fourth Proportional to 18,885.90, 28,327.17 and 6,405.63

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Solution

The fourth proportional to 18,885.90, 28,327.17 and 6,405.63 is: 9,607.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,885.90 : 28,327.17 = 6,405.63 : x
  2. Step 2: Convert to fraction form
    18,885.90/28,327.17 = 6,405.63/x
  3. Step 3: Cross multiply
    18,885.90x = 28,327.17 × 6,405.63
  4. Step 4: Simplify right side
    18,885.90x = 181,453,369.97
  5. Step 5: Solve for x
    x = 181,453,369.97/18,885.90
  6. Step 6: Final answer
    x = 9,607.88

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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.