Home / 30,148.13-45,215.67-19,039.97

Finding the Fourth Proportional to 30,148.13, 45,215.67 and 19,039.97

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Solution

The fourth proportional to 30,148.13, 45,215.67 and 19,039.97 is: 28,555.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,148.13 : 45,215.67 = 19,039.97 : x
  2. Step 2: Convert to fraction form
    30,148.13/45,215.67 = 19,039.97/x
  3. Step 3: Cross multiply
    30,148.13x = 45,215.67 × 19,039.97
  4. Step 4: Simplify right side
    30,148.13x = 860,905,000.33
  5. Step 5: Solve for x
    x = 860,905,000.33/30,148.13
  6. Step 6: Final answer
    x = 28,555.83

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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.