Home / 12,920.51-19,380.83-4,600.85

Finding the Fourth Proportional to 12,920.51, 19,380.83 and 4,600.85

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Solution

The fourth proportional to 12,920.51, 19,380.83 and 4,600.85 is: 6,901.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,920.51 : 19,380.83 = 4,600.85 : x
  2. Step 2: Convert to fraction form
    12,920.51/19,380.83 = 4,600.85/x
  3. Step 3: Cross multiply
    12,920.51x = 19,380.83 × 4,600.85
  4. Step 4: Simplify right side
    12,920.51x = 89,168,206.30
  5. Step 5: Solve for x
    x = 89,168,206.30/12,920.51
  6. Step 6: Final answer
    x = 6,901.29

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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.