Home / 18,646.08-25,722-12,271.68

Finding the Fourth Proportional to 18,646.08, 25,722 and 12,271.68

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Solution

The fourth proportional to 18,646.08, 25,722 and 12,271.68 is: 16,928.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,646.08 : 25,722 = 12,271.68 : x
  2. Step 2: Convert to fraction form
    18,646.08/25,722 = 12,271.68/x
  3. Step 3: Cross multiply
    18,646.08x = 25,722 × 12,271.68
  4. Step 4: Simplify right side
    18,646.08x = 315,652,152.96
  5. Step 5: Solve for x
    x = 315,652,152.96/18,646.08
  6. Step 6: Final answer
    x = 16,928.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.