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Finding the Fourth Proportional to 25,829.92, 38,744.88 and 8,312.05

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Solution

The fourth proportional to 25,829.92, 38,744.88 and 8,312.05 is: 12,468.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,829.92 : 38,744.88 = 8,312.05 : x
  2. Step 2: Convert to fraction form
    25,829.92/38,744.88 = 8,312.05/x
  3. Step 3: Cross multiply
    25,829.92x = 38,744.88 × 8,312.05
  4. Step 4: Simplify right side
    25,829.92x = 322,049,144.52
  5. Step 5: Solve for x
    x = 322,049,144.52/25,829.92
  6. Step 6: Final answer
    x = 12,468.07

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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.