Home / 31,939.84-47,920.42-14,168.04

Finding the Fourth Proportional to 31,939.84, 47,920.42 and 14,168.04

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Solution

The fourth proportional to 31,939.84, 47,920.42 and 14,168.04 is: 21,256.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,939.84 : 47,920.42 = 14,168.04 : x
  2. Step 2: Convert to fraction form
    31,939.84/47,920.42 = 14,168.04/x
  3. Step 3: Cross multiply
    31,939.84x = 47,920.42 × 14,168.04
  4. Step 4: Simplify right side
    31,939.84x = 678,938,581.23
  5. Step 5: Solve for x
    x = 678,938,581.23/31,939.84
  6. Step 6: Final answer
    x = 21,256.80

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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.