Home / 12,239.91-18,322.20-9,877.95

Finding the Fourth Proportional to 12,239.91, 18,322.20 and 9,877.95

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Solution

The fourth proportional to 12,239.91, 18,322.20 and 9,877.95 is: 14,786.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,239.91 : 18,322.20 = 9,877.95 : x
  2. Step 2: Convert to fraction form
    12,239.91/18,322.20 = 9,877.95/x
  3. Step 3: Cross multiply
    12,239.91x = 18,322.20 × 9,877.95
  4. Step 4: Simplify right side
    12,239.91x = 180,985,775.49
  5. Step 5: Solve for x
    x = 180,985,775.49/12,239.91
  6. Step 6: Final answer
    x = 14,786.53

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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.