Home / 13,775.24-18,980.34-12,083.72

Finding the Fourth Proportional to 13,775.24, 18,980.34 and 12,083.72

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Solution

The fourth proportional to 13,775.24, 18,980.34 and 12,083.72 is: 16,649.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,775.24 : 18,980.34 = 12,083.72 : x
  2. Step 2: Convert to fraction form
    13,775.24/18,980.34 = 12,083.72/x
  3. Step 3: Cross multiply
    13,775.24x = 18,980.34 × 12,083.72
  4. Step 4: Simplify right side
    13,775.24x = 229,353,114.06
  5. Step 5: Solve for x
    x = 229,353,114.06/13,775.24
  6. Step 6: Final answer
    x = 16,649.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.