Home / 31,347.84-47,028.24-13,817.28

Finding the Fourth Proportional to 31,347.84, 47,028.24 and 13,817.28

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Solution

The fourth proportional to 31,347.84, 47,028.24 and 13,817.28 is: 20,728.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,347.84 : 47,028.24 = 13,817.28 : x
  2. Step 2: Convert to fraction form
    31,347.84/47,028.24 = 13,817.28/x
  3. Step 3: Cross multiply
    31,347.84x = 47,028.24 × 13,817.28
  4. Step 4: Simplify right side
    31,347.84x = 649,802,359.99
  5. Step 5: Solve for x
    x = 649,802,359.99/31,347.84
  6. Step 6: Final answer
    x = 20,728.78

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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.