Home / 21,379.60-32,025.63-12,587.86

Finding the Fourth Proportional to 21,379.60, 32,025.63 and 12,587.86

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Solution

The fourth proportional to 21,379.60, 32,025.63 and 12,587.86 is: 18,856.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,379.60 : 32,025.63 = 12,587.86 : x
  2. Step 2: Convert to fraction form
    21,379.60/32,025.63 = 12,587.86/x
  3. Step 3: Cross multiply
    21,379.60x = 32,025.63 × 12,587.86
  4. Step 4: Simplify right side
    21,379.60x = 403,134,146.85
  5. Step 5: Solve for x
    x = 403,134,146.85/21,379.60
  6. Step 6: Final answer
    x = 18,856.02

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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.