Home / 13,186.11-19,777.37-4,420.83

Finding the Fourth Proportional to 13,186.11, 19,777.37 and 4,420.83

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Solution

The fourth proportional to 13,186.11, 19,777.37 and 4,420.83 is: 6,630.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,186.11 : 19,777.37 = 4,420.83 : x
  2. Step 2: Convert to fraction form
    13,186.11/19,777.37 = 4,420.83/x
  3. Step 3: Cross multiply
    13,186.11x = 19,777.37 × 4,420.83
  4. Step 4: Simplify right side
    13,186.11x = 87,432,368.51
  5. Step 5: Solve for x
    x = 87,432,368.51/13,186.11
  6. Step 6: Final answer
    x = 6,630.64

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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.