Home / 13,020.92-19,508.70-7,815.32

Finding the Fourth Proportional to 13,020.92, 19,508.70 and 7,815.32

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Solution

The fourth proportional to 13,020.92, 19,508.70 and 7,815.32 is: 11,709.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,020.92 : 19,508.70 = 7,815.32 : x
  2. Step 2: Convert to fraction form
    13,020.92/19,508.70 = 7,815.32/x
  3. Step 3: Cross multiply
    13,020.92x = 19,508.70 × 7,815.32
  4. Step 4: Simplify right side
    13,020.92x = 152,466,733.28
  5. Step 5: Solve for x
    x = 152,466,733.28/13,020.92
  6. Step 6: Final answer
    x = 11,709.37

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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.