Home / 18,684.91-25,792.37-13,688.81

Finding the Fourth Proportional to 18,684.91, 25,792.37 and 13,688.81

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Solution

The fourth proportional to 18,684.91, 25,792.37 and 13,688.81 is: 18,895.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,684.91 : 25,792.37 = 13,688.81 : x
  2. Step 2: Convert to fraction form
    18,684.91/25,792.37 = 13,688.81/x
  3. Step 3: Cross multiply
    18,684.91x = 25,792.37 × 13,688.81
  4. Step 4: Simplify right side
    18,684.91x = 353,066,852.38
  5. Step 5: Solve for x
    x = 353,066,852.38/18,684.91
  6. Step 6: Final answer
    x = 18,895.83

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Double scale
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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.