Home / 12,601.12-18,901.70-4,281.20

Finding the Fourth Proportional to 12,601.12, 18,901.70 and 4,281.20

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Solution

The fourth proportional to 12,601.12, 18,901.70 and 4,281.20 is: 6,421.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,601.12 : 18,901.70 = 4,281.20 : x
  2. Step 2: Convert to fraction form
    12,601.12/18,901.70 = 4,281.20/x
  3. Step 3: Cross multiply
    12,601.12x = 18,901.70 × 4,281.20
  4. Step 4: Simplify right side
    12,601.12x = 80,921,958.04
  5. Step 5: Solve for x
    x = 80,921,958.04/12,601.12
  6. Step 6: Final answer
    x = 6,421.81

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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.