Home / 12,910.04-19,360.74-4,142.87

Finding the Fourth Proportional to 12,910.04, 19,360.74 and 4,142.87

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Solution

The fourth proportional to 12,910.04, 19,360.74 and 4,142.87 is: 6,212.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,910.04 : 19,360.74 = 4,142.87 : x
  2. Step 2: Convert to fraction form
    12,910.04/19,360.74 = 4,142.87/x
  3. Step 3: Cross multiply
    12,910.04x = 19,360.74 × 4,142.87
  4. Step 4: Simplify right side
    12,910.04x = 80,209,028.92
  5. Step 5: Solve for x
    x = 80,209,028.92/12,910.04
  6. Step 6: Final answer
    x = 6,212.92

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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.