Home / 12,709.91-19,056.35-4,909.61

Finding the Fourth Proportional to 12,709.91, 19,056.35 and 4,909.61

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Solution

The fourth proportional to 12,709.91, 19,056.35 and 4,909.61 is: 7,361.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,709.91 : 19,056.35 = 4,909.61 : x
  2. Step 2: Convert to fraction form
    12,709.91/19,056.35 = 4,909.61/x
  3. Step 3: Cross multiply
    12,709.91x = 19,056.35 × 4,909.61
  4. Step 4: Simplify right side
    12,709.91x = 93,559,126.69
  5. Step 5: Solve for x
    x = 93,559,126.69/12,709.91
  6. Step 6: Final answer
    x = 7,361.12

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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.