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Finding the Fourth Proportional to 12,347.84, 18,520.90 and 4,027.67

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Solution

The fourth proportional to 12,347.84, 18,520.90 and 4,027.67 is: 6,041.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,347.84 : 18,520.90 = 4,027.67 : x
  2. Step 2: Convert to fraction form
    12,347.84/18,520.90 = 4,027.67/x
  3. Step 3: Cross multiply
    12,347.84x = 18,520.90 × 4,027.67
  4. Step 4: Simplify right side
    12,347.84x = 74,596,073.30
  5. Step 5: Solve for x
    x = 74,596,073.30/12,347.84
  6. Step 6: Final answer
    x = 6,041.22

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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.