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Finding the Fourth Proportional to 19,411.29, 29,116.95 and 8,310.80

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Solution

The fourth proportional to 19,411.29, 29,116.95 and 8,310.80 is: 12,466.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,411.29 : 29,116.95 = 8,310.80 : x
  2. Step 2: Convert to fraction form
    19,411.29/29,116.95 = 8,310.80/x
  3. Step 3: Cross multiply
    19,411.29x = 29,116.95 × 8,310.80
  4. Step 4: Simplify right side
    19,411.29x = 241,985,002.48
  5. Step 5: Solve for x
    x = 241,985,002.48/19,411.29
  6. Step 6: Final answer
    x = 12,466.20

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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.