Home / 12,865.16-19,299.90-4,102.76

Finding the Fourth Proportional to 12,865.16, 19,299.90 and 4,102.76

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Solution

The fourth proportional to 12,865.16, 19,299.90 and 4,102.76 is: 6,154.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,865.16 : 19,299.90 = 4,102.76 : x
  2. Step 2: Convert to fraction form
    12,865.16/19,299.90 = 4,102.76/x
  3. Step 3: Cross multiply
    12,865.16x = 19,299.90 × 4,102.76
  4. Step 4: Simplify right side
    12,865.16x = 79,182,857.72
  5. Step 5: Solve for x
    x = 79,182,857.72/12,865.16
  6. Step 6: Final answer
    x = 6,154.83

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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.