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Finding the Fourth Proportional to 25,703.79, 38,561.91 and 8,173.68

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Solution

The fourth proportional to 25,703.79, 38,561.91 and 8,173.68 is: 12,262.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,703.79 : 38,561.91 = 8,173.68 : x
  2. Step 2: Convert to fraction form
    25,703.79/38,561.91 = 8,173.68/x
  3. Step 3: Cross multiply
    25,703.79x = 38,561.91 × 8,173.68
  4. Step 4: Simplify right side
    25,703.79x = 315,192,712.53
  5. Step 5: Solve for x
    x = 315,192,712.53/25,703.79
  6. Step 6: Final answer
    x = 12,262.50

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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.