Home / 28,140.97-38,834.26-15,394.04

Finding the Fourth Proportional to 28,140.97, 38,834.26 and 15,394.04

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Solution

The fourth proportional to 28,140.97, 38,834.26 and 15,394.04 is: 21,243.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,140.97 : 38,834.26 = 15,394.04 : x
  2. Step 2: Convert to fraction form
    28,140.97/38,834.26 = 15,394.04/x
  3. Step 3: Cross multiply
    28,140.97x = 38,834.26 × 15,394.04
  4. Step 4: Simplify right side
    28,140.97x = 597,816,151.81
  5. Step 5: Solve for x
    x = 597,816,151.81/28,140.97
  6. Step 6: Final answer
    x = 21,243.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.