Home / 13,458.38-20,189.86-4,572.76

Finding the Fourth Proportional to 13,458.38, 20,189.86 and 4,572.76

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Solution

The fourth proportional to 13,458.38, 20,189.86 and 4,572.76 is: 6,859.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,458.38 : 20,189.86 = 4,572.76 : x
  2. Step 2: Convert to fraction form
    13,458.38/20,189.86 = 4,572.76/x
  3. Step 3: Cross multiply
    13,458.38x = 20,189.86 × 4,572.76
  4. Step 4: Simplify right side
    13,458.38x = 92,323,384.21
  5. Step 5: Solve for x
    x = 92,323,384.21/13,458.38
  6. Step 6: Final answer
    x = 6,859.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.