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Finding the Fourth Proportional to 30,297.50, 45,446.66 and 9,521

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Solution

The fourth proportional to 30,297.50, 45,446.66 and 9,521 is: 14,281.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,297.50 : 45,446.66 = 9,521 : x
  2. Step 2: Convert to fraction form
    30,297.50/45,446.66 = 9,521/x
  3. Step 3: Cross multiply
    30,297.50x = 45,446.66 × 9,521
  4. Step 4: Simplify right side
    30,297.50x = 432,697,649.86
  5. Step 5: Solve for x
    x = 432,697,649.86/30,297.50
  6. Step 6: Final answer
    x = 14,281.63

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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.