Home / 12,302.16-18,415.58-9,940.20

Finding the Fourth Proportional to 12,302.16, 18,415.58 and 9,940.20

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Solution

The fourth proportional to 12,302.16, 18,415.58 and 9,940.20 is: 14,879.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,302.16 : 18,415.58 = 9,940.20 : x
  2. Step 2: Convert to fraction form
    12,302.16/18,415.58 = 9,940.20/x
  3. Step 3: Cross multiply
    12,302.16x = 18,415.58 × 9,940.20
  4. Step 4: Simplify right side
    12,302.16x = 183,054,498.62
  5. Step 5: Solve for x
    x = 183,054,498.62/12,302.16
  6. Step 6: Final answer
    x = 14,879.87

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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.