Home / 13,278.96-19,920.24-4,511.52

Finding the Fourth Proportional to 13,278.96, 19,920.24 and 4,511.52

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Solution

The fourth proportional to 13,278.96, 19,920.24 and 4,511.52 is: 6,767.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.96 : 19,920.24 = 4,511.52 : x
  2. Step 2: Convert to fraction form
    13,278.96/19,920.24 = 4,511.52/x
  3. Step 3: Cross multiply
    13,278.96x = 19,920.24 × 4,511.52
  4. Step 4: Simplify right side
    13,278.96x = 89,870,561.16
  5. Step 5: Solve for x
    x = 89,870,561.16/13,278.96
  6. Step 6: Final answer
    x = 6,767.89

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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.