Home / 20,660.33-28,510.70-11,708.67

Finding the Fourth Proportional to 20,660.33, 28,510.70 and 11,708.67

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Solution

The fourth proportional to 20,660.33, 28,510.70 and 11,708.67 is: 16,157.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,660.33 : 28,510.70 = 11,708.67 : x
  2. Step 2: Convert to fraction form
    20,660.33/28,510.70 = 11,708.67/x
  3. Step 3: Cross multiply
    20,660.33x = 28,510.70 × 11,708.67
  4. Step 4: Simplify right side
    20,660.33x = 333,822,319.23
  5. Step 5: Solve for x
    x = 333,822,319.23/20,660.33
  6. Step 6: Final answer
    x = 16,157.65

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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.