Home / 18,709.20-28,044.60-10,376.40

Finding the Fourth Proportional to 18,709.20, 28,044.60 and 10,376.40

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Solution

The fourth proportional to 18,709.20, 28,044.60 and 10,376.40 is: 15,553.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,709.20 : 28,044.60 = 10,376.40 : x
  2. Step 2: Convert to fraction form
    18,709.20/28,044.60 = 10,376.40/x
  3. Step 3: Cross multiply
    18,709.20x = 28,044.60 × 10,376.40
  4. Step 4: Simplify right side
    18,709.20x = 291,001,987.44
  5. Step 5: Solve for x
    x = 291,001,987.44/18,709.20
  6. Step 6: Final answer
    x = 15,553.95

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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.