Home / 20,558.83-28,369.47-12,060.05

Finding the Fourth Proportional to 20,558.83, 28,369.47 and 12,060.05

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Solution

The fourth proportional to 20,558.83, 28,369.47 and 12,060.05 is: 16,641.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,558.83 : 28,369.47 = 12,060.05 : x
  2. Step 2: Convert to fraction form
    20,558.83/28,369.47 = 12,060.05/x
  3. Step 3: Cross multiply
    20,558.83x = 28,369.47 × 12,060.05
  4. Step 4: Simplify right side
    20,558.83x = 342,137,226.67
  5. Step 5: Solve for x
    x = 342,137,226.67/20,558.83
  6. Step 6: Final answer
    x = 16,641.86

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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.