Home / 18,436.20-27,663.30-8,570.40

Finding the Fourth Proportional to 18,436.20, 27,663.30 and 8,570.40

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Solution

The fourth proportional to 18,436.20, 27,663.30 and 8,570.40 is: 12,859.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,436.20 : 27,663.30 = 8,570.40 : x
  2. Step 2: Convert to fraction form
    18,436.20/27,663.30 = 8,570.40/x
  3. Step 3: Cross multiply
    18,436.20x = 27,663.30 × 8,570.40
  4. Step 4: Simplify right side
    18,436.20x = 237,085,546.32
  5. Step 5: Solve for x
    x = 237,085,546.32/18,436.20
  6. Step 6: Final answer
    x = 12,859.78

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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.