Home / 18,215.46-27,329.85-7,688.10

Finding the Fourth Proportional to 18,215.46, 27,329.85 and 7,688.10

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Solution

The fourth proportional to 18,215.46, 27,329.85 and 7,688.10 is: 11,534.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,215.46 : 27,329.85 = 7,688.10 : x
  2. Step 2: Convert to fraction form
    18,215.46/27,329.85 = 7,688.10/x
  3. Step 3: Cross multiply
    18,215.46x = 27,329.85 × 7,688.10
  4. Step 4: Simplify right side
    18,215.46x = 210,114,619.79
  5. Step 5: Solve for x
    x = 210,114,619.79/18,215.46
  6. Step 6: Final answer
    x = 11,534.96

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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.