Home / 12,890.73-19,317.84-5,487.74

Finding the Fourth Proportional to 12,890.73, 19,317.84 and 5,487.74

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Solution

The fourth proportional to 12,890.73, 19,317.84 and 5,487.74 is: 8,223.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,890.73 : 19,317.84 = 5,487.74 : x
  2. Step 2: Convert to fraction form
    12,890.73/19,317.84 = 5,487.74/x
  3. Step 3: Cross multiply
    12,890.73x = 19,317.84 × 5,487.74
  4. Step 4: Simplify right side
    12,890.73x = 106,011,186.69
  5. Step 5: Solve for x
    x = 106,011,186.69/12,890.73
  6. Step 6: Final answer
    x = 8,223.83

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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.