Home / 20,558.19-28,365.48-12,059.87

Finding the Fourth Proportional to 20,558.19, 28,365.48 and 12,059.87

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Solution

The fourth proportional to 20,558.19, 28,365.48 and 12,059.87 is: 16,639.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,558.19 : 28,365.48 = 12,059.87 : x
  2. Step 2: Convert to fraction form
    20,558.19/28,365.48 = 12,059.87/x
  3. Step 3: Cross multiply
    20,558.19x = 28,365.48 × 12,059.87
  4. Step 4: Simplify right side
    20,558.19x = 342,083,859.46
  5. Step 5: Solve for x
    x = 342,083,859.46/20,558.19
  6. Step 6: Final answer
    x = 16,639.78

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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.