Home / 30,482.11-45,723.18-12,939.64

Finding the Fourth Proportional to 30,482.11, 45,723.18 and 12,939.64

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Solution

The fourth proportional to 30,482.11, 45,723.18 and 12,939.64 is: 19,409.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,482.11 : 45,723.18 = 12,939.64 : x
  2. Step 2: Convert to fraction form
    30,482.11/45,723.18 = 12,939.64/x
  3. Step 3: Cross multiply
    30,482.11x = 45,723.18 × 12,939.64
  4. Step 4: Simplify right side
    30,482.11x = 591,641,488.86
  5. Step 5: Solve for x
    x = 591,641,488.86/30,482.11
  6. Step 6: Final answer
    x = 19,409.47

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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.