Home / 12,306.33-16,990.49-8,528.15

Finding the Fourth Proportional to 12,306.33, 16,990.49 and 8,528.15

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Solution

The fourth proportional to 12,306.33, 16,990.49 and 8,528.15 is: 11,774.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,306.33 : 16,990.49 = 8,528.15 : x
  2. Step 2: Convert to fraction form
    12,306.33/16,990.49 = 8,528.15/x
  3. Step 3: Cross multiply
    12,306.33x = 16,990.49 × 8,528.15
  4. Step 4: Simplify right side
    12,306.33x = 144,897,511.09
  5. Step 5: Solve for x
    x = 144,897,511.09/12,306.33
  6. Step 6: Final answer
    x = 11,774.23

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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.