Home / 12,538.17-18,792.67-12,399.66

Finding the Fourth Proportional to 12,538.17, 18,792.67 and 12,399.66

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Solution

The fourth proportional to 12,538.17, 18,792.67 and 12,399.66 is: 18,585.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,538.17 : 18,792.67 = 12,399.66 : x
  2. Step 2: Convert to fraction form
    12,538.17/18,792.67 = 12,399.66/x
  3. Step 3: Cross multiply
    12,538.17x = 18,792.67 × 12,399.66
  4. Step 4: Simplify right side
    12,538.17x = 233,022,718.49
  5. Step 5: Solve for x
    x = 233,022,718.49/12,538.17
  6. Step 6: Final answer
    x = 18,585.07

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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.