Home / 10,976.91-16,427.09-8,979.45

Finding the Fourth Proportional to 10,976.91, 16,427.09 and 8,979.45

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Solution

The fourth proportional to 10,976.91, 16,427.09 and 8,979.45 is: 13,437.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,976.91 : 16,427.09 = 8,979.45 : x
  2. Step 2: Convert to fraction form
    10,976.91/16,427.09 = 8,979.45/x
  3. Step 3: Cross multiply
    10,976.91x = 16,427.09 × 8,979.45
  4. Step 4: Simplify right side
    10,976.91x = 147,506,188.40
  5. Step 5: Solve for x
    x = 147,506,188.40/10,976.91
  6. Step 6: Final answer
    x = 13,437.86

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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.