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Finding the Fourth Proportional to 12,311.52, 16,989.99 and 7,006.74

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Solution

The fourth proportional to 12,311.52, 16,989.99 and 7,006.74 is: 9,669.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,311.52 : 16,989.99 = 7,006.74 : x
  2. Step 2: Convert to fraction form
    12,311.52/16,989.99 = 7,006.74/x
  3. Step 3: Cross multiply
    12,311.52x = 16,989.99 × 7,006.74
  4. Step 4: Simplify right side
    12,311.52x = 119,044,442.53
  5. Step 5: Solve for x
    x = 119,044,442.53/12,311.52
  6. Step 6: Final answer
    x = 9,669.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.