Home / 12,197.98-18,291.78-3,875.76

Finding the Fourth Proportional to 12,197.98, 18,291.78 and 3,875.76

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Solution

The fourth proportional to 12,197.98, 18,291.78 and 3,875.76 is: 5,811.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,197.98 : 18,291.78 = 3,875.76 : x
  2. Step 2: Convert to fraction form
    12,197.98/18,291.78 = 3,875.76/x
  3. Step 3: Cross multiply
    12,197.98x = 18,291.78 × 3,875.76
  4. Step 4: Simplify right side
    12,197.98x = 70,894,549.25
  5. Step 5: Solve for x
    x = 70,894,549.25/12,197.98
  6. Step 6: Final answer
    x = 5,811.99

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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.