Home / 12,138.34-18,207.96-4,347.14

Finding the Fourth Proportional to 12,138.34, 18,207.96 and 4,347.14

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Solution

The fourth proportional to 12,138.34, 18,207.96 and 4,347.14 is: 6,520.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,138.34 : 18,207.96 = 4,347.14 : x
  2. Step 2: Convert to fraction form
    12,138.34/18,207.96 = 4,347.14/x
  3. Step 3: Cross multiply
    12,138.34x = 18,207.96 × 4,347.14
  4. Step 4: Simplify right side
    12,138.34x = 79,152,551.23
  5. Step 5: Solve for x
    x = 79,152,551.23/12,138.34
  6. Step 6: Final answer
    x = 6,520.87

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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.