Home / 18,974.40-28,461.60-9,111.36

Finding the Fourth Proportional to 18,974.40, 28,461.60 and 9,111.36

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Solution

The fourth proportional to 18,974.40, 28,461.60 and 9,111.36 is: 13,667.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,974.40 : 28,461.60 = 9,111.36 : x
  2. Step 2: Convert to fraction form
    18,974.40/28,461.60 = 9,111.36/x
  3. Step 3: Cross multiply
    18,974.40x = 28,461.60 × 9,111.36
  4. Step 4: Simplify right side
    18,974.40x = 259,323,883.78
  5. Step 5: Solve for x
    x = 259,323,883.78/18,974.40
  6. Step 6: Final answer
    x = 13,667.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.