Home / 30,703.46-42,375.87-19,379.13

Finding the Fourth Proportional to 30,703.46, 42,375.87 and 19,379.13

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Solution

The fourth proportional to 30,703.46, 42,375.87 and 19,379.13 is: 26,746.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,703.46 : 42,375.87 = 19,379.13 : x
  2. Step 2: Convert to fraction form
    30,703.46/42,375.87 = 19,379.13/x
  3. Step 3: Cross multiply
    30,703.46x = 42,375.87 × 19,379.13
  4. Step 4: Simplify right side
    30,703.46x = 821,207,493.59
  5. Step 5: Solve for x
    x = 821,207,493.59/30,703.46
  6. Step 6: Final answer
    x = 26,746.42

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1.5x scale

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.