Home / 12,386.94-18,575.75-4,988.87

Finding the Fourth Proportional to 12,386.94, 18,575.75 and 4,988.87

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Solution

The fourth proportional to 12,386.94, 18,575.75 and 4,988.87 is: 7,481.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,386.94 : 18,575.75 = 4,988.87 : x
  2. Step 2: Convert to fraction form
    12,386.94/18,575.75 = 4,988.87/x
  3. Step 3: Cross multiply
    12,386.94x = 18,575.75 × 4,988.87
  4. Step 4: Simplify right side
    12,386.94x = 92,671,976.96
  5. Step 5: Solve for x
    x = 92,671,976.96/12,386.94
  6. Step 6: Final answer
    x = 7,481.43

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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.