Home / 28,078.26-38,748.01-15,503.02

Finding the Fourth Proportional to 28,078.26, 38,748.01 and 15,503.02

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Solution

The fourth proportional to 28,078.26, 38,748.01 and 15,503.02 is: 21,394.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,078.26 : 38,748.01 = 15,503.02 : x
  2. Step 2: Convert to fraction form
    28,078.26/38,748.01 = 15,503.02/x
  3. Step 3: Cross multiply
    28,078.26x = 38,748.01 × 15,503.02
  4. Step 4: Simplify right side
    28,078.26x = 600,711,173.99
  5. Step 5: Solve for x
    x = 600,711,173.99/28,078.26
  6. Step 6: Final answer
    x = 21,394.17

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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.