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Finding the Fourth Proportional to 18,359.88, 27,535.56 and 8,990.55

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Solution

The fourth proportional to 18,359.88, 27,535.56 and 8,990.55 is: 13,483.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,359.88 : 27,535.56 = 8,990.55 : x
  2. Step 2: Convert to fraction form
    18,359.88/27,535.56 = 8,990.55/x
  3. Step 3: Cross multiply
    18,359.88x = 27,535.56 × 8,990.55
  4. Step 4: Simplify right side
    18,359.88x = 247,559,828.96
  5. Step 5: Solve for x
    x = 247,559,828.96/18,359.88
  6. Step 6: Final answer
    x = 13,483.74

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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.