Home / 12,666.41-18,989.36-5,276.42

Finding the Fourth Proportional to 12,666.41, 18,989.36 and 5,276.42

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Solution

The fourth proportional to 12,666.41, 18,989.36 and 5,276.42 is: 7,910.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,666.41 : 18,989.36 = 5,276.42 : x
  2. Step 2: Convert to fraction form
    12,666.41/18,989.36 = 5,276.42/x
  3. Step 3: Cross multiply
    12,666.41x = 18,989.36 × 5,276.42
  4. Step 4: Simplify right side
    12,666.41x = 100,195,838.89
  5. Step 5: Solve for x
    x = 100,195,838.89/12,666.41
  6. Step 6: Final answer
    x = 7,910.36

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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.