Home / 15,696.12-21,655.08-8,976.84

Finding the Fourth Proportional to 15,696.12, 21,655.08 and 8,976.84

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Solution

The fourth proportional to 15,696.12, 21,655.08 and 8,976.84 is: 12,384.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,696.12 : 21,655.08 = 8,976.84 : x
  2. Step 2: Convert to fraction form
    15,696.12/21,655.08 = 8,976.84/x
  3. Step 3: Cross multiply
    15,696.12x = 21,655.08 × 8,976.84
  4. Step 4: Simplify right side
    15,696.12x = 194,394,188.35
  5. Step 5: Solve for x
    x = 194,394,188.35/15,696.12
  6. Step 6: Final answer
    x = 12,384.86

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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.