Home / 30,517.12-45,738.71-12,950.05

Finding the Fourth Proportional to 30,517.12, 45,738.71 and 12,950.05

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Solution

The fourth proportional to 30,517.12, 45,738.71 and 12,950.05 is: 19,409.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,517.12 : 45,738.71 = 12,950.05 : x
  2. Step 2: Convert to fraction form
    30,517.12/45,738.71 = 12,950.05/x
  3. Step 3: Cross multiply
    30,517.12x = 45,738.71 × 12,950.05
  4. Step 4: Simplify right side
    30,517.12x = 592,318,581.44
  5. Step 5: Solve for x
    x = 592,318,581.44/30,517.12
  6. Step 6: Final answer
    x = 19,409.39

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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.