Home / 13,811.86-19,060.01-7,761.61

Finding the Fourth Proportional to 13,811.86, 19,060.01 and 7,761.61

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Solution

The fourth proportional to 13,811.86, 19,060.01 and 7,761.61 is: 10,710.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,811.86 : 19,060.01 = 7,761.61 : x
  2. Step 2: Convert to fraction form
    13,811.86/19,060.01 = 7,761.61/x
  3. Step 3: Cross multiply
    13,811.86x = 19,060.01 × 7,761.61
  4. Step 4: Simplify right side
    13,811.86x = 147,936,325.41
  5. Step 5: Solve for x
    x = 147,936,325.41/13,811.86
  6. Step 6: Final answer
    x = 10,710.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.