Home / 18,905.40-26,112.38-13,862.34

Finding the Fourth Proportional to 18,905.40, 26,112.38 and 13,862.34

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Solution

The fourth proportional to 18,905.40, 26,112.38 and 13,862.34 is: 19,146.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,905.40 : 26,112.38 = 13,862.34 : x
  2. Step 2: Convert to fraction form
    18,905.40/26,112.38 = 13,862.34/x
  3. Step 3: Cross multiply
    18,905.40x = 26,112.38 × 13,862.34
  4. Step 4: Simplify right side
    18,905.40x = 361,978,620.46
  5. Step 5: Solve for x
    x = 361,978,620.46/18,905.40
  6. Step 6: Final answer
    x = 19,146.84

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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.