Home / 18,017.89-27,043.44-9,139.45

Finding the Fourth Proportional to 18,017.89, 27,043.44 and 9,139.45

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Solution

The fourth proportional to 18,017.89, 27,043.44 and 9,139.45 is: 13,717.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,017.89 : 27,043.44 = 9,139.45 : x
  2. Step 2: Convert to fraction form
    18,017.89/27,043.44 = 9,139.45/x
  3. Step 3: Cross multiply
    18,017.89x = 27,043.44 × 9,139.45
  4. Step 4: Simplify right side
    18,017.89x = 247,162,100.10
  5. Step 5: Solve for x
    x = 247,162,100.10/18,017.89
  6. Step 6: Final answer
    x = 13,717.60

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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.