Home / 30,117.20-41,562.81-18,178.20

Finding the Fourth Proportional to 30,117.20, 41,562.81 and 18,178.20

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Solution

The fourth proportional to 30,117.20, 41,562.81 and 18,178.20 is: 25,086.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,117.20 : 41,562.81 = 18,178.20 : x
  2. Step 2: Convert to fraction form
    30,117.20/41,562.81 = 18,178.20/x
  3. Step 3: Cross multiply
    30,117.20x = 41,562.81 × 18,178.20
  4. Step 4: Simplify right side
    30,117.20x = 755,537,072.74
  5. Step 5: Solve for x
    x = 755,537,072.74/30,117.20
  6. Step 6: Final answer
    x = 25,086.56

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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.