Home / 18,644.74-25,708.40-13,921.06

Finding the Fourth Proportional to 18,644.74, 25,708.40 and 13,921.06

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Solution

The fourth proportional to 18,644.74, 25,708.40 and 13,921.06 is: 19,195.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,644.74 : 25,708.40 = 13,921.06 : x
  2. Step 2: Convert to fraction form
    18,644.74/25,708.40 = 13,921.06/x
  3. Step 3: Cross multiply
    18,644.74x = 25,708.40 × 13,921.06
  4. Step 4: Simplify right side
    18,644.74x = 357,888,178.90
  5. Step 5: Solve for x
    x = 357,888,178.90/18,644.74
  6. Step 6: Final answer
    x = 19,195.13

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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.