Home / 28,138.46-42,160.96-19,801.04

Finding the Fourth Proportional to 28,138.46, 42,160.96 and 19,801.04

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Solution

The fourth proportional to 28,138.46, 42,160.96 and 19,801.04 is: 29,668.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,138.46 : 42,160.96 = 19,801.04 : x
  2. Step 2: Convert to fraction form
    28,138.46/42,160.96 = 19,801.04/x
  3. Step 3: Cross multiply
    28,138.46x = 42,160.96 × 19,801.04
  4. Step 4: Simplify right side
    28,138.46x = 834,830,855.40
  5. Step 5: Solve for x
    x = 834,830,855.40/28,138.46
  6. Step 6: Final answer
    x = 29,668.68

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1.5x scale

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.