Home / 20,932.10-28,886.30-11,500.67

Finding the Fourth Proportional to 20,932.10, 28,886.30 and 11,500.67

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Solution

The fourth proportional to 20,932.10, 28,886.30 and 11,500.67 is: 15,870.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,932.10 : 28,886.30 = 11,500.67 : x
  2. Step 2: Convert to fraction form
    20,932.10/28,886.30 = 11,500.67/x
  3. Step 3: Cross multiply
    20,932.10x = 28,886.30 × 11,500.67
  4. Step 4: Simplify right side
    20,932.10x = 332,211,699.18
  5. Step 5: Solve for x
    x = 332,211,699.18/20,932.10
  6. Step 6: Final answer
    x = 15,870.92

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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.