Home / 30,154.80-41,612.64-18,216.06

Finding the Fourth Proportional to 30,154.80, 41,612.64 and 18,216.06

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Solution

The fourth proportional to 30,154.80, 41,612.64 and 18,216.06 is: 25,137.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,154.80 : 41,612.64 = 18,216.06 : x
  2. Step 2: Convert to fraction form
    30,154.80/41,612.64 = 18,216.06/x
  3. Step 3: Cross multiply
    30,154.80x = 41,612.64 × 18,216.06
  4. Step 4: Simplify right side
    30,154.80x = 758,018,255.92
  5. Step 5: Solve for x
    x = 758,018,255.92/30,154.80
  6. Step 6: Final answer
    x = 25,137.57

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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.