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Finding the Fourth Proportional to 25,950.39, 38,931.06 and 8,418.87

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Solution

The fourth proportional to 25,950.39, 38,931.06 and 8,418.87 is: 12,630.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,950.39 : 38,931.06 = 8,418.87 : x
  2. Step 2: Convert to fraction form
    25,950.39/38,931.06 = 8,418.87/x
  3. Step 3: Cross multiply
    25,950.39x = 38,931.06 × 8,418.87
  4. Step 4: Simplify right side
    25,950.39x = 327,755,533.10
  5. Step 5: Solve for x
    x = 327,755,533.10/25,950.39
  6. Step 6: Final answer
    x = 12,630.08

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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.