Home / 30,589.28-45,869.84-12,108.64

Finding the Fourth Proportional to 30,589.28, 45,869.84 and 12,108.64

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Solution

The fourth proportional to 30,589.28, 45,869.84 and 12,108.64 is: 18,157.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,589.28 : 45,869.84 = 12,108.64 : x
  2. Step 2: Convert to fraction form
    30,589.28/45,869.84 = 12,108.64/x
  3. Step 3: Cross multiply
    30,589.28x = 45,869.84 × 12,108.64
  4. Step 4: Simplify right side
    30,589.28x = 555,421,379.42
  5. Step 5: Solve for x
    x = 555,421,379.42/30,589.28
  6. Step 6: Final answer
    x = 18,157.39

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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.