Home / 20,558.41-28,370.86-12,060.09

Finding the Fourth Proportional to 20,558.41, 28,370.86 and 12,060.09

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Solution

The fourth proportional to 20,558.41, 28,370.86 and 12,060.09 is: 16,643.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,558.41 : 28,370.86 = 12,060.09 : x
  2. Step 2: Convert to fraction form
    20,558.41/28,370.86 = 12,060.09/x
  3. Step 3: Cross multiply
    20,558.41x = 28,370.86 × 12,060.09
  4. Step 4: Simplify right side
    20,558.41x = 342,155,094.83
  5. Step 5: Solve for x
    x = 342,155,094.83/20,558.41
  6. Step 6: Final answer
    x = 16,643.07

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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.