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Finding the Fourth Proportional to 31,786.79, 47,680.99 and 9,600.89

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Solution

The fourth proportional to 31,786.79, 47,680.99 and 9,600.89 is: 14,401.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,786.79 : 47,680.99 = 9,600.89 : x
  2. Step 2: Convert to fraction form
    31,786.79/47,680.99 = 9,600.89/x
  3. Step 3: Cross multiply
    31,786.79x = 47,680.99 × 9,600.89
  4. Step 4: Simplify right side
    31,786.79x = 457,779,677.67
  5. Step 5: Solve for x
    x = 457,779,677.67/31,786.79
  6. Step 6: Final answer
    x = 14,401.57

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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.