Home / 18,621.18-27,931.78-5,473.62

Finding the Fourth Proportional to 18,621.18, 27,931.78 and 5,473.62

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Solution

The fourth proportional to 18,621.18, 27,931.78 and 5,473.62 is: 8,210.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,621.18 : 27,931.78 = 5,473.62 : x
  2. Step 2: Convert to fraction form
    18,621.18/27,931.78 = 5,473.62/x
  3. Step 3: Cross multiply
    18,621.18x = 27,931.78 × 5,473.62
  4. Step 4: Simplify right side
    18,621.18x = 152,887,949.64
  5. Step 5: Solve for x
    x = 152,887,949.64/18,621.18
  6. Step 6: Final answer
    x = 8,210.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.