Home / 31,817.12-47,710.62-11,812.82

Finding the Fourth Proportional to 31,817.12, 47,710.62 and 11,812.82

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Solution

The fourth proportional to 31,817.12, 47,710.62 and 11,812.82 is: 17,713.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,817.12 : 47,710.62 = 11,812.82 : x
  2. Step 2: Convert to fraction form
    31,817.12/47,710.62 = 11,812.82/x
  3. Step 3: Cross multiply
    31,817.12x = 47,710.62 × 11,812.82
  4. Step 4: Simplify right side
    31,817.12x = 563,596,727.60
  5. Step 5: Solve for x
    x = 563,596,727.60/31,817.12
  6. Step 6: Final answer
    x = 17,713.63

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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.