Home / 13,925.49-20,890.31-5,042.90

Finding the Fourth Proportional to 13,925.49, 20,890.31 and 5,042.90

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Solution

The fourth proportional to 13,925.49, 20,890.31 and 5,042.90 is: 7,565.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,925.49 : 20,890.31 = 5,042.90 : x
  2. Step 2: Convert to fraction form
    13,925.49/20,890.31 = 5,042.90/x
  3. Step 3: Cross multiply
    13,925.49x = 20,890.31 × 5,042.90
  4. Step 4: Simplify right side
    13,925.49x = 105,347,614.63
  5. Step 5: Solve for x
    x = 105,347,614.63/13,925.49
  6. Step 6: Final answer
    x = 7,565.09

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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.