Home / 12,678.23-18,984.54-11,267.66

Finding the Fourth Proportional to 12,678.23, 18,984.54 and 11,267.66

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Solution

The fourth proportional to 12,678.23, 18,984.54 and 11,267.66 is: 16,872.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,678.23 : 18,984.54 = 11,267.66 : x
  2. Step 2: Convert to fraction form
    12,678.23/18,984.54 = 11,267.66/x
  3. Step 3: Cross multiply
    12,678.23x = 18,984.54 × 11,267.66
  4. Step 4: Simplify right side
    12,678.23x = 213,911,341.98
  5. Step 5: Solve for x
    x = 213,911,341.98/12,678.23
  6. Step 6: Final answer
    x = 16,872.33

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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.