Home / 30,699.46-42,370.35-19,375.13

Finding the Fourth Proportional to 30,699.46, 42,370.35 and 19,375.13

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Solution

The fourth proportional to 30,699.46, 42,370.35 and 19,375.13 is: 26,740.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,699.46 : 42,370.35 = 19,375.13 : x
  2. Step 2: Convert to fraction form
    30,699.46/42,370.35 = 19,375.13/x
  3. Step 3: Cross multiply
    30,699.46x = 42,370.35 × 19,375.13
  4. Step 4: Simplify right side
    30,699.46x = 820,931,072.66
  5. Step 5: Solve for x
    x = 820,931,072.66/30,699.46
  6. Step 6: Final answer
    x = 26,740.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.