Home / 20,561.57-28,373.27-12,062.81

Finding the Fourth Proportional to 20,561.57, 28,373.27 and 12,062.81

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Solution

The fourth proportional to 20,561.57, 28,373.27 and 12,062.81 is: 16,645.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,561.57 : 28,373.27 = 12,062.81 : x
  2. Step 2: Convert to fraction form
    20,561.57/28,373.27 = 12,062.81/x
  3. Step 3: Cross multiply
    20,561.57x = 28,373.27 × 12,062.81
  4. Step 4: Simplify right side
    20,561.57x = 342,261,162.91
  5. Step 5: Solve for x
    x = 342,261,162.91/20,561.57
  6. Step 6: Final answer
    x = 16,645.67

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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.