Home / 18,640.44-25,719.57-13,607.40

Finding the Fourth Proportional to 18,640.44, 25,719.57 and 13,607.40

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Solution

The fourth proportional to 18,640.44, 25,719.57 and 13,607.40 is: 18,775.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,640.44 : 25,719.57 = 13,607.40 : x
  2. Step 2: Convert to fraction form
    18,640.44/25,719.57 = 13,607.40/x
  3. Step 3: Cross multiply
    18,640.44x = 25,719.57 × 13,607.40
  4. Step 4: Simplify right side
    18,640.44x = 349,976,476.82
  5. Step 5: Solve for x
    x = 349,976,476.82/18,640.44
  6. Step 6: Final answer
    x = 18,775.12

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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.