Home / 25,981.62-38,975.87-8,445.50

Finding the Fourth Proportional to 25,981.62, 38,975.87 and 8,445.50

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Solution

The fourth proportional to 25,981.62, 38,975.87 and 8,445.50 is: 12,669.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,981.62 : 38,975.87 = 8,445.50 : x
  2. Step 2: Convert to fraction form
    25,981.62/38,975.87 = 8,445.50/x
  3. Step 3: Cross multiply
    25,981.62x = 38,975.87 × 8,445.50
  4. Step 4: Simplify right side
    25,981.62x = 329,170,710.09
  5. Step 5: Solve for x
    x = 329,170,710.09/25,981.62
  6. Step 6: Final answer
    x = 12,669.37

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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.