Home / 30,010.50-45,007.25-12,458.61

Finding the Fourth Proportional to 30,010.50, 45,007.25 and 12,458.61

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Solution

The fourth proportional to 30,010.50, 45,007.25 and 12,458.61 is: 18,684.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,010.50 : 45,007.25 = 12,458.61 : x
  2. Step 2: Convert to fraction form
    30,010.50/45,007.25 = 12,458.61/x
  3. Step 3: Cross multiply
    30,010.50x = 45,007.25 × 12,458.61
  4. Step 4: Simplify right side
    30,010.50x = 560,727,712.63
  5. Step 5: Solve for x
    x = 560,727,712.63/30,010.50
  6. Step 6: Final answer
    x = 18,684.38

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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.