Home / 31,980.84-47,971.56-12,254.70

Finding the Fourth Proportional to 31,980.84, 47,971.56 and 12,254.70

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Solution

The fourth proportional to 31,980.84, 47,971.56 and 12,254.70 is: 18,382.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,980.84 : 47,971.56 = 12,254.70 : x
  2. Step 2: Convert to fraction form
    31,980.84/47,971.56 = 12,254.70/x
  3. Step 3: Cross multiply
    31,980.84x = 47,971.56 × 12,254.70
  4. Step 4: Simplify right side
    31,980.84x = 587,877,076.33
  5. Step 5: Solve for x
    x = 587,877,076.33/31,980.84
  6. Step 6: Final answer
    x = 18,382.16

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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.