Home / 12,868.40-19,300.98-4,104.20

Finding the Fourth Proportional to 12,868.40, 19,300.98 and 4,104.20

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Solution

The fourth proportional to 12,868.40, 19,300.98 and 4,104.20 is: 6,155.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,868.40 : 19,300.98 = 4,104.20 : x
  2. Step 2: Convert to fraction form
    12,868.40/19,300.98 = 4,104.20/x
  3. Step 3: Cross multiply
    12,868.40x = 19,300.98 × 4,104.20
  4. Step 4: Simplify right side
    12,868.40x = 79,215,082.12
  5. Step 5: Solve for x
    x = 79,215,082.12/12,868.40
  6. Step 6: Final answer
    x = 6,155.78

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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.