Home / 18,665.12-25,792.08-13,939.04

Finding the Fourth Proportional to 18,665.12, 25,792.08 and 13,939.04

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Solution

The fourth proportional to 18,665.12, 25,792.08 and 13,939.04 is: 19,261.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,665.12 : 25,792.08 = 13,939.04 : x
  2. Step 2: Convert to fraction form
    18,665.12/25,792.08 = 13,939.04/x
  3. Step 3: Cross multiply
    18,665.12x = 25,792.08 × 13,939.04
  4. Step 4: Simplify right side
    18,665.12x = 359,516,834.80
  5. Step 5: Solve for x
    x = 359,516,834.80/18,665.12
  6. Step 6: Final answer
    x = 19,261.43

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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.