Home / 30,378.56-41,911.20-17,798.72

Finding the Fourth Proportional to 30,378.56, 41,911.20 and 17,798.72

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Solution

The fourth proportional to 30,378.56, 41,911.20 and 17,798.72 is: 24,555.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,378.56 : 41,911.20 = 17,798.72 : x
  2. Step 2: Convert to fraction form
    30,378.56/41,911.20 = 17,798.72/x
  3. Step 3: Cross multiply
    30,378.56x = 41,911.20 × 17,798.72
  4. Step 4: Simplify right side
    30,378.56x = 745,965,713.66
  5. Step 5: Solve for x
    x = 745,965,713.66/30,378.56
  6. Step 6: Final answer
    x = 24,555.66

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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.