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Finding the Fourth Proportional to 30,479.86, 45,721.32 and 9,704.98

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Solution

The fourth proportional to 30,479.86, 45,721.32 and 9,704.98 is: 14,557.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,479.86 : 45,721.32 = 9,704.98 : x
  2. Step 2: Convert to fraction form
    30,479.86/45,721.32 = 9,704.98/x
  3. Step 3: Cross multiply
    30,479.86x = 45,721.32 × 9,704.98
  4. Step 4: Simplify right side
    30,479.86x = 443,724,496.17
  5. Step 5: Solve for x
    x = 443,724,496.17/30,479.86
  6. Step 6: Final answer
    x = 14,557.96

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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.