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Finding the Fourth Proportional to 25,899.21, 38,840.58 and 8,364.87

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Solution

The fourth proportional to 25,899.21, 38,840.58 and 8,364.87 is: 12,544.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,899.21 : 38,840.58 = 8,364.87 : x
  2. Step 2: Convert to fraction form
    25,899.21/38,840.58 = 8,364.87/x
  3. Step 3: Cross multiply
    25,899.21x = 38,840.58 × 8,364.87
  4. Step 4: Simplify right side
    25,899.21x = 324,896,402.42
  5. Step 5: Solve for x
    x = 324,896,402.42/25,899.21
  6. Step 6: Final answer
    x = 12,544.65

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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.