Home / 31,347.64-47,039.82-11,639.80

Finding the Fourth Proportional to 31,347.64, 47,039.82 and 11,639.80

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Solution

The fourth proportional to 31,347.64, 47,039.82 and 11,639.80 is: 17,466.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,347.64 : 47,039.82 = 11,639.80 : x
  2. Step 2: Convert to fraction form
    31,347.64/47,039.82 = 11,639.80/x
  3. Step 3: Cross multiply
    31,347.64x = 47,039.82 × 11,639.80
  4. Step 4: Simplify right side
    31,347.64x = 547,534,096.84
  5. Step 5: Solve for x
    x = 547,534,096.84/31,347.64
  6. Step 6: Final answer
    x = 17,466.52

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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.