Home / 12,136.56-18,208.26-10,979.88

Finding the Fourth Proportional to 12,136.56, 18,208.26 and 10,979.88

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Solution

The fourth proportional to 12,136.56, 18,208.26 and 10,979.88 is: 16,472.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,136.56 : 18,208.26 = 10,979.88 : x
  2. Step 2: Convert to fraction form
    12,136.56/18,208.26 = 10,979.88/x
  3. Step 3: Cross multiply
    12,136.56x = 18,208.26 × 10,979.88
  4. Step 4: Simplify right side
    12,136.56x = 199,924,509.81
  5. Step 5: Solve for x
    x = 199,924,509.81/12,136.56
  6. Step 6: Final answer
    x = 16,472.91

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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.