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Finding the Fourth Proportional to 18,421.52, 27,624.16 and 5,270.90

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Solution

The fourth proportional to 18,421.52, 27,624.16 and 5,270.90 is: 7,904.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,421.52 : 27,624.16 = 5,270.90 : x
  2. Step 2: Convert to fraction form
    18,421.52/27,624.16 = 5,270.90/x
  3. Step 3: Cross multiply
    18,421.52x = 27,624.16 × 5,270.90
  4. Step 4: Simplify right side
    18,421.52x = 145,604,184.94
  5. Step 5: Solve for x
    x = 145,604,184.94/18,421.52
  6. Step 6: Final answer
    x = 7,904.03

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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.