Home / 12,124.51-18,186.69-3,118.61

Finding the Fourth Proportional to 12,124.51, 18,186.69 and 3,118.61

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Solution

The fourth proportional to 12,124.51, 18,186.69 and 3,118.61 is: 4,677.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,124.51 : 18,186.69 = 3,118.61 : x
  2. Step 2: Convert to fraction form
    12,124.51/18,186.69 = 3,118.61/x
  3. Step 3: Cross multiply
    12,124.51x = 18,186.69 × 3,118.61
  4. Step 4: Simplify right side
    12,124.51x = 56,717,177.71
  5. Step 5: Solve for x
    x = 56,717,177.71/12,124.51
  6. Step 6: Final answer
    x = 4,677.89

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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.