Home / 18,118.40-27,180.30-6,430.64

Finding the Fourth Proportional to 18,118.40, 27,180.30 and 6,430.64

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Solution

The fourth proportional to 18,118.40, 27,180.30 and 6,430.64 is: 9,646.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,118.40 : 27,180.30 = 6,430.64 : x
  2. Step 2: Convert to fraction form
    18,118.40/27,180.30 = 6,430.64/x
  3. Step 3: Cross multiply
    18,118.40x = 27,180.30 × 6,430.64
  4. Step 4: Simplify right side
    18,118.40x = 174,786,724.39
  5. Step 5: Solve for x
    x = 174,786,724.39/18,118.40
  6. Step 6: Final answer
    x = 9,646.92

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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.