Home / 12,677.61-19,018.86-3,910.98

Finding the Fourth Proportional to 12,677.61, 19,018.86 and 3,910.98

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Solution

The fourth proportional to 12,677.61, 19,018.86 and 3,910.98 is: 5,867.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,677.61 : 19,018.86 = 3,910.98 : x
  2. Step 2: Convert to fraction form
    12,677.61/19,018.86 = 3,910.98/x
  3. Step 3: Cross multiply
    12,677.61x = 19,018.86 × 3,910.98
  4. Step 4: Simplify right side
    12,677.61x = 74,382,381.08
  5. Step 5: Solve for x
    x = 74,382,381.08/12,677.61
  6. Step 6: Final answer
    x = 5,867.22

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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.