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Finding the Fourth Proportional to 25,980.67, 38,973.72 and 8,446.39

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Solution

The fourth proportional to 25,980.67, 38,973.72 and 8,446.39 is: 12,670.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,980.67 : 38,973.72 = 8,446.39 : x
  2. Step 2: Convert to fraction form
    25,980.67/38,973.72 = 8,446.39/x
  3. Step 3: Cross multiply
    25,980.67x = 38,973.72 × 8,446.39
  4. Step 4: Simplify right side
    25,980.67x = 329,187,238.87
  5. Step 5: Solve for x
    x = 329,187,238.87/25,980.67
  6. Step 6: Final answer
    x = 12,670.47

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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.