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Finding the Fourth Proportional to 18,390.58, 27,532.68 and 16,491.40

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Solution

The fourth proportional to 18,390.58, 27,532.68 and 16,491.40 is: 24,689.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,390.58 : 27,532.68 = 16,491.40 : x
  2. Step 2: Convert to fraction form
    18,390.58/27,532.68 = 16,491.40/x
  3. Step 3: Cross multiply
    18,390.58x = 27,532.68 × 16,491.40
  4. Step 4: Simplify right side
    18,390.58x = 454,052,438.95
  5. Step 5: Solve for x
    x = 454,052,438.95/18,390.58
  6. Step 6: Final answer
    x = 24,689.40

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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.