Home / 38,639.88-57,985.80-13,679.84

Finding the Fourth Proportional to 38,639.88, 57,985.80 and 13,679.84

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Solution

The fourth proportional to 38,639.88, 57,985.80 and 13,679.84 is: 20,528.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,639.88 : 57,985.80 = 13,679.84 : x
  2. Step 2: Convert to fraction form
    38,639.88/57,985.80 = 13,679.84/x
  3. Step 3: Cross multiply
    38,639.88x = 57,985.80 × 13,679.84
  4. Step 4: Simplify right side
    38,639.88x = 793,236,466.27
  5. Step 5: Solve for x
    x = 793,236,466.27/38,639.88
  6. Step 6: Final answer
    x = 20,528.96

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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.