Home / 31,615.74-47,405.10-11,895.84

Finding the Fourth Proportional to 31,615.74, 47,405.10 and 11,895.84

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Solution

The fourth proportional to 31,615.74, 47,405.10 and 11,895.84 is: 17,836.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,615.74 : 47,405.10 = 11,895.84 : x
  2. Step 2: Convert to fraction form
    31,615.74/47,405.10 = 11,895.84/x
  3. Step 3: Cross multiply
    31,615.74x = 47,405.10 × 11,895.84
  4. Step 4: Simplify right side
    31,615.74x = 563,923,484.78
  5. Step 5: Solve for x
    x = 563,923,484.78/31,615.74
  6. Step 6: Final answer
    x = 17,836.80

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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.