Home / 12,398.16-18,588.15-7,960.83

Finding the Fourth Proportional to 12,398.16, 18,588.15 and 7,960.83

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Solution

The fourth proportional to 12,398.16, 18,588.15 and 7,960.83 is: 11,935.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,398.16 : 18,588.15 = 7,960.83 : x
  2. Step 2: Convert to fraction form
    12,398.16/18,588.15 = 7,960.83/x
  3. Step 3: Cross multiply
    12,398.16x = 18,588.15 × 7,960.83
  4. Step 4: Simplify right side
    12,398.16x = 147,977,102.16
  5. Step 5: Solve for x
    x = 147,977,102.16/12,398.16
  6. Step 6: Final answer
    x = 11,935.41

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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.